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  },
  "is_live": false,
  "findings": [
    {
      "kind": "national",
      "title": "Petrol (E10) fell 0.4p",
      "detail": "The equal-station UK average ended the week at 161.1p per litre across 7,894 stations."
    },
    {
      "kind": "national",
      "title": "Diesel (B7) held steady",
      "detail": "The equal-station UK average ended the week at 181.7p per litre across 8,010 stations."
    },
    {
      "kind": "retailer",
      "title": "Nicholl had the lowest retailer petrol average",
      "detail": "Its measured average was 150.7p per litre across 5 stations."
    },
    {
      "kind": "area",
      "title": "CA postcode area was the fastest-rising petrol area",
      "detail": "The postcode-area average increased 0.3p to 161.5p per litre."
    },
    {
      "kind": "motorway",
      "title": "Motorway petrol carried a 14.7p premium",
      "detail": "That is about \u00a38.09 on a 55-litre fill compared with non-motorway stations."
    },
    {
      "kind": "supermarket",
      "title": "Supermarket petrol averaged 2.0p less",
      "detail": "The measured gap equates to about \u00a31.10 on a 55-litre fill."
    }
  ],
  "headline": "Petrol fell 0.4p and diesel held steady in the week to 16 August 2026",
  "week_start": "2026-08-10",
  "area_movers": {
    "diesel": {
      "rising": [
        {
          "key": "TA",
          "label": "TA postcode area",
          "change_7d": 0.9,
          "current_avg": 183.1,
          "previous_avg": 182.2,
          "station_count": 71,
          "comparison_station_count": 71
        },
        {
          "key": "DT",
          "label": "DT postcode area",
          "change_7d": 0.9,
          "current_avg": 182.2,
          "previous_avg": 181.3,
          "station_count": 29,
          "comparison_station_count": 29
        },
        {
          "key": "AL",
          "label": "AL postcode area",
          "change_7d": 0.7,
          "current_avg": 183.7,
          "previous_avg": 183.0,
          "station_count": 27,
          "comparison_station_count": 27
        },
        {
          "key": "BA",
          "label": "BA postcode area",
          "change_7d": 0.7,
          "current_avg": 182.3,
          "previous_avg": 181.6,
          "station_count": 58,
          "comparison_station_count": 58
        },
        {
          "key": "LD",
          "label": "LD postcode area",
          "change_7d": 0.6,
          "current_avg": 183.2,
          "previous_avg": 182.6,
          "station_count": 19,
          "comparison_station_count": 19
        }
      ],
      "falling": [
        {
          "key": "HS",
          "label": "HS postcode area",
          "change_7d": -3.6,
          "current_avg": 186.8,
          "previous_avg": 190.4,
          "station_count": 14,
          "comparison_station_count": 14
        },
        {
          "key": "ZE",
          "label": "ZE postcode area",
          "change_7d": -3.4,
          "current_avg": 177.7,
          "previous_avg": 181.1,
          "station_count": 17,
          "comparison_station_count": 16
        },
        {
          "key": "TD",
          "label": "TD postcode area",
          "change_7d": -1.6,
          "current_avg": 179.3,
          "previous_avg": 180.9,
          "station_count": 24,
          "comparison_station_count": 24
        },
        {
          "key": "FY",
          "label": "FY postcode area",
          "change_7d": -1.0,
          "current_avg": 178.4,
          "previous_avg": 179.4,
          "station_count": 26,
          "comparison_station_count": 26
        },
        {
          "key": "HR",
          "label": "HR postcode area",
          "change_7d": -1.0,
          "current_avg": 182.1,
          "previous_avg": 183.1,
          "station_count": 34,
          "comparison_station_count": 34
        }
      ]
    },
    "petrol": {
      "rising": [
        {
          "key": "CA",
          "label": "CA postcode area",
          "change_7d": 0.3,
          "current_avg": 161.5,
          "previous_avg": 161.2,
          "station_count": 65,
          "comparison_station_count": 65
        },
        {
          "key": "G",
          "label": "G postcode area",
          "change_7d": 0.2,
          "current_avg": 163.7,
          "previous_avg": 163.5,
          "station_count": 132,
          "comparison_station_count": 132
        },
        {
          "key": "IP",
          "label": "IP postcode area",
          "change_7d": 0.2,
          "current_avg": 160.4,
          "previous_avg": 160.2,
          "station_count": 91,
          "comparison_station_count": 91
        },
        {
          "key": "DT",
          "label": "DT postcode area",
          "change_7d": 0.2,
          "current_avg": 163.4,
          "previous_avg": 163.2,
          "station_count": 28,
          "comparison_station_count": 28
        },
        {
          "key": "RG",
          "label": "RG postcode area",
          "change_7d": 0.1,
          "current_avg": 164.6,
          "previous_avg": 164.5,
          "station_count": 94,
          "comparison_station_count": 94
        }
      ],
      "falling": [
        {
          "key": "HS",
          "label": "HS postcode area",
          "change_7d": -4.5,
          "current_avg": 161.9,
          "previous_avg": 166.4,
          "station_count": 13,
          "comparison_station_count": 13
        },
        {
          "key": "ZE",
          "label": "ZE postcode area",
          "change_7d": -4.0,
          "current_avg": 157.1,
          "previous_avg": 161.5,
          "station_count": 11,
          "comparison_station_count": 10
        },
        {
          "key": "TD",
          "label": "TD postcode area",
          "change_7d": -2.7,
          "current_avg": 158.0,
          "previous_avg": 160.7,
          "station_count": 24,
          "comparison_station_count": 24
        },
        {
          "key": "KW",
          "label": "KW postcode area",
          "change_7d": -2.1,
          "current_avg": 159.2,
          "previous_avg": 161.3,
          "station_count": 17,
          "comparison_station_count": 17
        },
        {
          "key": "HR",
          "label": "HR postcode area",
          "change_7d": -1.2,
          "current_avg": 159.1,
          "previous_avg": 160.3,
          "station_count": 34,
          "comparison_station_count": 34
        }
      ]
    },
    "premium_diesel": {
      "rising": [
        {
          "key": "LA",
          "label": "LA postcode area",
          "change_7d": 0.9,
          "current_avg": 201.1,
          "previous_avg": 200.2,
          "station_count": 30,
          "comparison_station_count": 30
        },
        {
          "key": "TA",
          "label": "TA postcode area",
          "change_7d": 0.8,
          "current_avg": 199.3,
          "previous_avg": 198.5,
          "station_count": 30,
          "comparison_station_count": 30
        },
        {
          "key": "AL",
          "label": "AL postcode area",
          "change_7d": 0.8,
          "current_avg": 200.7,
          "previous_avg": 199.9,
          "station_count": 17,
          "comparison_station_count": 17
        },
        {
          "key": "PA",
          "label": "PA postcode area",
          "change_7d": 0.7,
          "current_avg": 198.0,
          "previous_avg": 197.3,
          "station_count": 11,
          "comparison_station_count": 11
        },
        {
          "key": "SP",
          "label": "SP postcode area",
          "change_7d": 0.6,
          "current_avg": 200.6,
          "previous_avg": 200.0,
          "station_count": 22,
          "comparison_station_count": 22
        }
      ],
      "falling": [
        {
          "key": "LD",
          "label": "LD postcode area",
          "change_7d": -1.0,
          "current_avg": 194.5,
          "previous_avg": 195.5,
          "station_count": 5,
          "comparison_station_count": 5
        },
        {
          "key": "PR",
          "label": "PR postcode area",
          "change_7d": -1.0,
          "current_avg": 196.6,
          "previous_avg": 197.6,
          "station_count": 40,
          "comparison_station_count": 40
        },
        {
          "key": "BT",
          "label": "BT postcode area",
          "change_7d": -0.8,
          "current_avg": 179.7,
          "previous_avg": 180.5,
          "station_count": 117,
          "comparison_station_count": 116
        },
        {
          "key": "BR",
          "label": "BR postcode area",
          "change_7d": -0.7,
          "current_avg": 201.3,
          "previous_avg": 202.0,
          "station_count": 25,
          "comparison_station_count": 25
        },
        {
          "key": "IG",
          "label": "IG postcode area",
          "change_7d": -0.6,
          "current_avg": 200.8,
          "previous_avg": 201.4,
          "station_count": 21,
          "comparison_station_count": 21
        }
      ]
    },
    "premium_petrol": {
      "rising": [
        {
          "key": "ML",
          "label": "ML postcode area",
          "change_7d": 0.7,
          "current_avg": 180.7,
          "previous_avg": 180.0,
          "station_count": 47,
          "comparison_station_count": 47
        },
        {
          "key": "NN",
          "label": "NN postcode area",
          "change_7d": 0.7,
          "current_avg": 184.0,
          "previous_avg": 183.3,
          "station_count": 74,
          "comparison_station_count": 74
        },
        {
          "key": "SK",
          "label": "SK postcode area",
          "change_7d": 0.6,
          "current_avg": 181.0,
          "previous_avg": 180.4,
          "station_count": 53,
          "comparison_station_count": 53
        },
        {
          "key": "MK",
          "label": "MK postcode area",
          "change_7d": 0.5,
          "current_avg": 180.9,
          "previous_avg": 180.4,
          "station_count": 56,
          "comparison_station_count": 56
        },
        {
          "key": "SL",
          "label": "SL postcode area",
          "change_7d": 0.4,
          "current_avg": 182.2,
          "previous_avg": 181.8,
          "station_count": 39,
          "comparison_station_count": 39
        }
      ],
      "falling": [
        {
          "key": "ZE",
          "label": "ZE postcode area",
          "change_7d": -3.6,
          "current_avg": 153.8,
          "previous_avg": 157.4,
          "station_count": 5,
          "comparison_station_count": 5
        },
        {
          "key": "TD",
          "label": "TD postcode area",
          "change_7d": -2.9,
          "current_avg": 176.3,
          "previous_avg": 179.2,
          "station_count": 16,
          "comparison_station_count": 16
        },
        {
          "key": "HS",
          "label": "HS postcode area",
          "change_7d": -2.1,
          "current_avg": 162.3,
          "previous_avg": 164.4,
          "station_count": 8,
          "comparison_station_count": 8
        },
        {
          "key": "KW",
          "label": "KW postcode area",
          "change_7d": -2.0,
          "current_avg": 165.6,
          "previous_avg": 167.6,
          "station_count": 11,
          "comparison_station_count": 11
        },
        {
          "key": "HG",
          "label": "HG postcode area",
          "change_7d": -1.5,
          "current_avg": 177.8,
          "previous_avg": 179.3,
          "station_count": 14,
          "comparison_station_count": 14
        }
      ]
    }
  },
  "methodology": {
    "cohort": "A station/fuel enters from its first recorded price event; current active status is not projected backwards.",
    "price_bounds": "Values outside 50p to 300p per litre are excluded.",
    "carry_forward": "A station's last reported price is carried forward until it changes.",
    "area_definition": "Local movers use the alphabetic UK postcode area.",
    "station_weighting": "Each station contributes one equal-weight end-of-day price.",
    "classification_limitation": "Brand, postcode area, and motorway labels use the station's current classification because dated dimension history is not yet stored."
  },
  "week_ending": "2026-08-16",
  "generated_at": "2026-08-17T07:31:01.727620+00:00",
  "motorway_premium": {
    "diesel": {
      "premium": 15.7,
      "other_avg": 181.4,
      "motorway_avg": 197.1,
      "tank_premium_gbp": 8.63,
      "motorway_station_count": 168,
      "comparison_station_count": 7842
    },
    "petrol": {
      "premium": 14.7,
      "other_avg": 160.8,
      "motorway_avg": 175.5,
      "tank_premium_gbp": 8.09,
      "motorway_station_count": 170,
      "comparison_station_count": 7724
    },
    "premium_diesel": {
      "premium": 13.0,
      "other_avg": 198.2,
      "motorway_avg": 211.2,
      "tank_premium_gbp": 7.15,
      "motorway_station_count": 154,
      "comparison_station_count": 4103
    },
    "premium_petrol": {
      "premium": 14.5,
      "other_avg": 177.9,
      "motorway_avg": 192.4,
      "tank_premium_gbp": 7.97,
      "motorway_station_count": 161,
      "comparison_station_count": 6145
    }
  },
  "retailer_rankings": {
    "diesel": [
      {
        "key": "Costco",
        "label": "Costco",
        "change_7d": 0.1,
        "current_avg": 172.8,
        "previous_avg": 172.7,
        "station_count": 21,
        "comparison_station_count": 21
      },
      {
        "key": "Maxol",
        "label": "Maxol",
        "change_7d": -1.6,
        "current_avg": 174.1,
        "previous_avg": 175.7,
        "station_count": 90,
        "comparison_station_count": 90
      },
      {
        "key": "Solo",
        "label": "Solo",
        "change_7d": 0.7,
        "current_avg": 174.2,
        "previous_avg": 173.5,
        "station_count": 8,
        "comparison_station_count": 8
      },
      {
        "key": "Nicholl",
        "label": "Nicholl",
        "change_7d": 1.2,
        "current_avg": 174.5,
        "previous_avg": 173.3,
        "station_count": 5,
        "comparison_station_count": 5
      },
      {
        "key": "Circle K",
        "label": "Circle K",
        "change_7d": 0.0,
        "current_avg": 175.3,
        "previous_avg": 175.3,
        "station_count": 47,
        "comparison_station_count": 47
      },
      {
        "key": "Emo",
        "label": "Emo",
        "change_7d": -1.3,
        "current_avg": 175.3,
        "previous_avg": 176.6,
        "station_count": 14,
        "comparison_station_count": 14
      },
      {
        "key": "Tesco",
        "label": "Tesco",
        "change_7d": 0.1,
        "current_avg": 178.7,
        "previous_avg": 178.6,
        "station_count": 519,
        "comparison_station_count": 519
      },
      {
        "key": "Sainsburys",
        "label": "Sainsbury's",
        "change_7d": -0.5,
        "current_avg": 178.8,
        "previous_avg": 179.3,
        "station_count": 316,
        "comparison_station_count": 316
      },
      {
        "key": "Applegreen",
        "label": "Applegreen",
        "change_7d": 0.0,
        "current_avg": 179.3,
        "previous_avg": 179.3,
        "station_count": 13,
        "comparison_station_count": 13
      },
      {
        "key": "Co-op",
        "label": "Co-op",
        "change_7d": 0.1,
        "current_avg": 179.3,
        "previous_avg": 179.2,
        "station_count": 20,
        "comparison_station_count": 20
      },
      {
        "key": "Asda",
        "label": "Asda",
        "change_7d": -0.2,
        "current_avg": 179.6,
        "previous_avg": 179.8,
        "station_count": 405,
        "comparison_station_count": 405
      },
      {
        "key": "Morrisons",
        "label": "Morrisons",
        "change_7d": -0.3,
        "current_avg": 179.6,
        "previous_avg": 179.9,
        "station_count": 340,
        "comparison_station_count": 340
      },
      {
        "key": "Total Energies",
        "label": "Total Energies",
        "change_7d": -0.6,
        "current_avg": 179.8,
        "previous_avg": 180.4,
        "station_count": 9,
        "comparison_station_count": 9
      },
      {
        "key": "Essar",
        "label": "Essar",
        "change_7d": -1.1,
        "current_avg": 180.1,
        "previous_avg": 181.2,
        "station_count": 44,
        "comparison_station_count": 44
      },
      {
        "key": "Harvest Energy",
        "label": "Harvest Energy",
        "change_7d": -0.7,
        "current_avg": 180.2,
        "previous_avg": 180.9,
        "station_count": 48,
        "comparison_station_count": 48
      },
      {
        "key": "Texaco",
        "label": "Texaco",
        "change_7d": 0.1,
        "current_avg": 180.3,
        "previous_avg": 180.2,
        "station_count": 523,
        "comparison_station_count": 522
      },
      {
        "key": "Murco",
        "label": "Murco",
        "change_7d": 0.1,
        "current_avg": 180.6,
        "previous_avg": 180.5,
        "station_count": 167,
        "comparison_station_count": 167
      },
      {
        "key": "EG",
        "label": "EG",
        "change_7d": -1.2,
        "current_avg": 180.7,
        "previous_avg": 181.9,
        "station_count": 146,
        "comparison_station_count": 146
      },
      {
        "key": "Jet",
        "label": "Jet",
        "change_7d": -0.5,
        "current_avg": 180.7,
        "previous_avg": 181.2,
        "station_count": 310,
        "comparison_station_count": 310
      },
      {
        "key": "Valero",
        "label": "Valero",
        "change_7d": -0.6,
        "current_avg": 181.7,
        "previous_avg": 182.3,
        "station_count": 148,
        "comparison_station_count": 148
      },
      {
        "key": "Gulf",
        "label": "Gulf",
        "change_7d": -0.2,
        "current_avg": 182.1,
        "previous_avg": 182.2,
        "station_count": 296,
        "comparison_station_count": 293
      },
      {
        "key": "Pace",
        "label": "Pace",
        "change_7d": -0.4,
        "current_avg": 182.6,
        "previous_avg": 183.0,
        "station_count": 49,
        "comparison_station_count": 49
      },
      {
        "key": "Esso",
        "label": "Esso",
        "change_7d": -0.3,
        "current_avg": 183.1,
        "previous_avg": 183.4,
        "station_count": 1452,
        "comparison_station_count": 1452
      },
      {
        "key": "BP",
        "label": "BP",
        "change_7d": 0.0,
        "current_avg": 184.4,
        "previous_avg": 184.4,
        "station_count": 1094,
        "comparison_station_count": 1094
      },
      {
        "key": "Gleaner",
        "label": "Gleaner",
        "change_7d": 0.0,
        "current_avg": 185.2,
        "previous_avg": 185.2,
        "station_count": 27,
        "comparison_station_count": 27
      },
      {
        "key": "Shell",
        "label": "Shell",
        "change_7d": 0.7,
        "current_avg": 185.5,
        "previous_avg": 184.8,
        "station_count": 916,
        "comparison_station_count": 916
      },
      {
        "key": "Central Convenience",
        "label": "Central Convenience",
        "change_7d": 10.7,
        "current_avg": 186.6,
        "previous_avg": 175.9,
        "station_count": 18,
        "comparison_station_count": 18
      }
    ],
    "petrol": [
      {
        "key": "Nicholl",
        "label": "Nicholl",
        "change_7d": 0.4,
        "current_avg": 150.7,
        "previous_avg": 150.3,
        "station_count": 5,
        "comparison_station_count": 5
      },
      {
        "key": "Emo",
        "label": "Emo",
        "change_7d": -1.5,
        "current_avg": 152.0,
        "previous_avg": 153.5,
        "station_count": 14,
        "comparison_station_count": 14
      },
      {
        "key": "Costco",
        "label": "Costco",
        "change_7d": -0.2,
        "current_avg": 153.1,
        "previous_avg": 153.3,
        "station_count": 21,
        "comparison_station_count": 21
      },
      {
        "key": "Maxol",
        "label": "Maxol",
        "change_7d": -1.2,
        "current_avg": 153.1,
        "previous_avg": 154.3,
        "station_count": 89,
        "comparison_station_count": 89
      },
      {
        "key": "Circle K",
        "label": "Circle K",
        "change_7d": -0.3,
        "current_avg": 154.0,
        "previous_avg": 154.3,
        "station_count": 48,
        "comparison_station_count": 48
      },
      {
        "key": "Solo",
        "label": "Solo",
        "change_7d": 1.0,
        "current_avg": 155.9,
        "previous_avg": 154.9,
        "station_count": 6,
        "comparison_station_count": 6
      },
      {
        "key": "Total Energies",
        "label": "Total Energies",
        "change_7d": -0.7,
        "current_avg": 157.9,
        "previous_avg": 158.6,
        "station_count": 10,
        "comparison_station_count": 10
      },
      {
        "key": "Applegreen",
        "label": "Applegreen",
        "change_7d": 0.0,
        "current_avg": 158.0,
        "previous_avg": 158.0,
        "station_count": 13,
        "comparison_station_count": 13
      },
      {
        "key": "Essar",
        "label": "Essar",
        "change_7d": -1.4,
        "current_avg": 159.2,
        "previous_avg": 160.6,
        "station_count": 45,
        "comparison_station_count": 45
      },
      {
        "key": "Tesco",
        "label": "Tesco",
        "change_7d": -0.4,
        "current_avg": 159.4,
        "previous_avg": 159.8,
        "station_count": 519,
        "comparison_station_count": 519
      },
      {
        "key": "Co-op",
        "label": "Co-op",
        "change_7d": -0.3,
        "current_avg": 159.5,
        "previous_avg": 159.8,
        "station_count": 20,
        "comparison_station_count": 20
      },
      {
        "key": "Sainsburys",
        "label": "Sainsbury's",
        "change_7d": -1.4,
        "current_avg": 159.5,
        "previous_avg": 160.9,
        "station_count": 316,
        "comparison_station_count": 316
      },
      {
        "key": "Morrisons",
        "label": "Morrisons",
        "change_7d": -0.7,
        "current_avg": 159.6,
        "previous_avg": 160.3,
        "station_count": 340,
        "comparison_station_count": 340
      },
      {
        "key": "Harvest Energy",
        "label": "Harvest Energy",
        "change_7d": -0.5,
        "current_avg": 159.7,
        "previous_avg": 160.2,
        "station_count": 48,
        "comparison_station_count": 48
      },
      {
        "key": "Jet",
        "label": "Jet",
        "change_7d": -0.7,
        "current_avg": 159.7,
        "previous_avg": 160.4,
        "station_count": 310,
        "comparison_station_count": 310
      },
      {
        "key": "Murco",
        "label": "Murco",
        "change_7d": -0.4,
        "current_avg": 159.7,
        "previous_avg": 160.1,
        "station_count": 169,
        "comparison_station_count": 169
      },
      {
        "key": "Texaco",
        "label": "Texaco",
        "change_7d": -0.2,
        "current_avg": 159.8,
        "previous_avg": 159.9,
        "station_count": 527,
        "comparison_station_count": 525
      },
      {
        "key": "Asda",
        "label": "Asda",
        "change_7d": -0.4,
        "current_avg": 159.9,
        "previous_avg": 160.3,
        "station_count": 405,
        "comparison_station_count": 405
      },
      {
        "key": "Valero",
        "label": "Valero",
        "change_7d": -0.7,
        "current_avg": 160.2,
        "previous_avg": 160.9,
        "station_count": 148,
        "comparison_station_count": 148
      },
      {
        "key": "EG",
        "label": "EG",
        "change_7d": -1.1,
        "current_avg": 160.3,
        "previous_avg": 161.4,
        "station_count": 147,
        "comparison_station_count": 147
      },
      {
        "key": "Gulf",
        "label": "Gulf",
        "change_7d": -0.5,
        "current_avg": 161.0,
        "previous_avg": 161.4,
        "station_count": 295,
        "comparison_station_count": 292
      },
      {
        "key": "Pace",
        "label": "Pace",
        "change_7d": 0.2,
        "current_avg": 161.7,
        "previous_avg": 161.5,
        "station_count": 45,
        "comparison_station_count": 45
      },
      {
        "key": "Esso",
        "label": "Esso",
        "change_7d": -0.5,
        "current_avg": 162.1,
        "previous_avg": 162.6,
        "station_count": 1457,
        "comparison_station_count": 1457
      },
      {
        "key": "BP",
        "label": "BP",
        "change_7d": -0.3,
        "current_avg": 163.4,
        "previous_avg": 163.7,
        "station_count": 1097,
        "comparison_station_count": 1097
      },
      {
        "key": "Gleaner",
        "label": "Gleaner",
        "change_7d": -0.6,
        "current_avg": 163.6,
        "previous_avg": 164.2,
        "station_count": 27,
        "comparison_station_count": 27
      },
      {
        "key": "Shell",
        "label": "Shell",
        "change_7d": -0.2,
        "current_avg": 163.8,
        "previous_avg": 164.0,
        "station_count": 918,
        "comparison_station_count": 918
      },
      {
        "key": "Central Convenience",
        "label": "Central Convenience",
        "change_7d": 7.2,
        "current_avg": 167.0,
        "previous_avg": 159.8,
        "station_count": 18,
        "comparison_station_count": 18
      }
    ],
    "premium_diesel": [
      {
        "key": "Circle K",
        "label": "Circle K",
        "change_7d": -0.8,
        "current_avg": 178.9,
        "previous_avg": 179.7,
        "station_count": 12,
        "comparison_station_count": 12
      },
      {
        "key": "Maxol",
        "label": "Maxol",
        "change_7d": -1.4,
        "current_avg": 179.9,
        "previous_avg": 181.3,
        "station_count": 15,
        "comparison_station_count": 15
      },
      {
        "key": "Essar",
        "label": "Essar",
        "change_7d": -0.6,
        "current_avg": 182.4,
        "previous_avg": 183.0,
        "station_count": 7,
        "comparison_station_count": 7
      },
      {
        "key": "Morrisons",
        "label": "Morrisons",
        "change_7d": -0.3,
        "current_avg": 189.5,
        "previous_avg": 189.8,
        "station_count": 91,
        "comparison_station_count": 91
      },
      {
        "key": "Co-op",
        "label": "Co-op",
        "change_7d": 0.0,
        "current_avg": 191.6,
        "previous_avg": 191.6,
        "station_count": 6,
        "comparison_station_count": 6
      },
      {
        "key": "Total Energies",
        "label": "Total Energies",
        "change_7d": 0.0,
        "current_avg": 191.7,
        "previous_avg": 191.7,
        "station_count": 5,
        "comparison_station_count": 5
      },
      {
        "key": "Murco",
        "label": "Murco",
        "change_7d": 1.9,
        "current_avg": 193.7,
        "previous_avg": 191.8,
        "station_count": 21,
        "comparison_station_count": 21
      },
      {
        "key": "Harvest Energy",
        "label": "Harvest Energy",
        "change_7d": -1.1,
        "current_avg": 194.2,
        "previous_avg": 195.3,
        "station_count": 18,
        "comparison_station_count": 18
      },
      {
        "key": "Texaco",
        "label": "Texaco",
        "change_7d": 0.1,
        "current_avg": 194.4,
        "previous_avg": 194.3,
        "station_count": 308,
        "comparison_station_count": 307
      },
      {
        "key": "Jet",
        "label": "Jet",
        "change_7d": -0.2,
        "current_avg": 194.7,
        "previous_avg": 194.9,
        "station_count": 163,
        "comparison_station_count": 163
      },
      {
        "key": "Gulf",
        "label": "Gulf",
        "change_7d": 0.4,
        "current_avg": 195.3,
        "previous_avg": 194.9,
        "station_count": 76,
        "comparison_station_count": 75
      },
      {
        "key": "Asda",
        "label": "Asda",
        "change_7d": -0.2,
        "current_avg": 195.8,
        "previous_avg": 196.0,
        "station_count": 53,
        "comparison_station_count": 53
      },
      {
        "key": "Central Convenience",
        "label": "Central Convenience",
        "change_7d": 7.4,
        "current_avg": 196.9,
        "previous_avg": 189.5,
        "station_count": 5,
        "comparison_station_count": 5
      },
      {
        "key": "Esso",
        "label": "Esso",
        "change_7d": 0.0,
        "current_avg": 199.2,
        "previous_avg": 199.2,
        "station_count": 1162,
        "comparison_station_count": 1162
      },
      {
        "key": "EG",
        "label": "EG",
        "change_7d": -1.1,
        "current_avg": 199.6,
        "previous_avg": 200.7,
        "station_count": 73,
        "comparison_station_count": 73
      },
      {
        "key": "Valero",
        "label": "Valero",
        "change_7d": -0.6,
        "current_avg": 199.8,
        "previous_avg": 200.4,
        "station_count": 117,
        "comparison_station_count": 117
      },
      {
        "key": "Shell",
        "label": "Shell",
        "change_7d": -0.2,
        "current_avg": 201.0,
        "previous_avg": 201.2,
        "station_count": 869,
        "comparison_station_count": 869
      },
      {
        "key": "BP",
        "label": "BP",
        "change_7d": 0.1,
        "current_avg": 202.2,
        "previous_avg": 202.1,
        "station_count": 1002,
        "comparison_station_count": 1002
      }
    ],
    "premium_petrol": [
      {
        "key": "Circle K",
        "label": "Circle K",
        "change_7d": -0.8,
        "current_avg": 161.4,
        "previous_avg": 162.2,
        "station_count": 11,
        "comparison_station_count": 11
      },
      {
        "key": "Maxol",
        "label": "Maxol",
        "change_7d": -1.0,
        "current_avg": 162.3,
        "previous_avg": 163.3,
        "station_count": 53,
        "comparison_station_count": 53
      },
      {
        "key": "Costco",
        "label": "Costco",
        "change_7d": -0.3,
        "current_avg": 165.4,
        "previous_avg": 165.7,
        "station_count": 21,
        "comparison_station_count": 21
      },
      {
        "key": "Applegreen",
        "label": "Applegreen",
        "change_7d": 0.0,
        "current_avg": 166.3,
        "previous_avg": 166.3,
        "station_count": 5,
        "comparison_station_count": 5
      },
      {
        "key": "Pace",
        "label": "Pace",
        "change_7d": 0.0,
        "current_avg": 167.9,
        "previous_avg": 167.9,
        "station_count": 12,
        "comparison_station_count": 12
      },
      {
        "key": "Total Energies",
        "label": "Total Energies",
        "change_7d": -0.4,
        "current_avg": 168.8,
        "previous_avg": 169.2,
        "station_count": 8,
        "comparison_station_count": 8
      },
      {
        "key": "Essar",
        "label": "Essar",
        "change_7d": -1.1,
        "current_avg": 169.3,
        "previous_avg": 170.4,
        "station_count": 19,
        "comparison_station_count": 19
      },
      {
        "key": "Tesco",
        "label": "Tesco",
        "change_7d": -0.4,
        "current_avg": 169.8,
        "previous_avg": 170.2,
        "station_count": 467,
        "comparison_station_count": 467
      },
      {
        "key": "Co-op",
        "label": "Co-op",
        "change_7d": -0.3,
        "current_avg": 170.6,
        "previous_avg": 170.9,
        "station_count": 14,
        "comparison_station_count": 14
      },
      {
        "key": "Sainsburys",
        "label": "Sainsbury's",
        "change_7d": -1.5,
        "current_avg": 171.5,
        "previous_avg": 173.0,
        "station_count": 292,
        "comparison_station_count": 292
      },
      {
        "key": "Murco",
        "label": "Murco",
        "change_7d": 0.3,
        "current_avg": 175.3,
        "previous_avg": 174.9,
        "station_count": 79,
        "comparison_station_count": 78
      },
      {
        "key": "Gleaner",
        "label": "Gleaner",
        "change_7d": -1.1,
        "current_avg": 175.6,
        "previous_avg": 176.7,
        "station_count": 6,
        "comparison_station_count": 6
      },
      {
        "key": "Harvest Energy",
        "label": "Harvest Energy",
        "change_7d": -0.3,
        "current_avg": 175.6,
        "previous_avg": 175.9,
        "station_count": 36,
        "comparison_station_count": 36
      },
      {
        "key": "Texaco",
        "label": "Texaco",
        "change_7d": -0.1,
        "current_avg": 175.6,
        "previous_avg": 175.7,
        "station_count": 412,
        "comparison_station_count": 411
      },
      {
        "key": "Gulf",
        "label": "Gulf",
        "change_7d": -0.4,
        "current_avg": 175.9,
        "previous_avg": 176.3,
        "station_count": 159,
        "comparison_station_count": 156
      },
      {
        "key": "Jet",
        "label": "Jet",
        "change_7d": -0.3,
        "current_avg": 176.3,
        "previous_avg": 176.6,
        "station_count": 244,
        "comparison_station_count": 244
      },
      {
        "key": "Asda",
        "label": "Asda",
        "change_7d": -0.2,
        "current_avg": 176.5,
        "previous_avg": 176.7,
        "station_count": 78,
        "comparison_station_count": 78
      },
      {
        "key": "Morrisons",
        "label": "Morrisons",
        "change_7d": 0.0,
        "current_avg": 176.5,
        "previous_avg": 176.5,
        "station_count": 339,
        "comparison_station_count": 339
      },
      {
        "key": "Central Convenience",
        "label": "Central Convenience",
        "change_7d": 5.0,
        "current_avg": 178.4,
        "previous_avg": 173.4,
        "station_count": 11,
        "comparison_station_count": 11
      },
      {
        "key": "Valero",
        "label": "Valero",
        "change_7d": -0.5,
        "current_avg": 179.3,
        "previous_avg": 179.8,
        "station_count": 120,
        "comparison_station_count": 120
      },
      {
        "key": "EG",
        "label": "EG",
        "change_7d": -1.3,
        "current_avg": 179.7,
        "previous_avg": 181.0,
        "station_count": 126,
        "comparison_station_count": 126
      },
      {
        "key": "Esso",
        "label": "Esso",
        "change_7d": 0.0,
        "current_avg": 179.8,
        "previous_avg": 179.8,
        "station_count": 1357,
        "comparison_station_count": 1357
      },
      {
        "key": "BP",
        "label": "BP",
        "change_7d": -0.1,
        "current_avg": 181.8,
        "previous_avg": 181.9,
        "station_count": 1045,
        "comparison_station_count": 1045
      },
      {
        "key": "Shell",
        "label": "Shell",
        "change_7d": 0.6,
        "current_avg": 187.2,
        "previous_avg": 186.6,
        "station_count": 911,
        "comparison_station_count": 911
      }
    ]
  },
  "source_updated_at": "2026-08-16T22:49:22+00:00",
  "methodology_version": "1.0-historical",
  "active_station_count": 8098,
  "supermarket_comparison": {
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      "saving": 3.3,
      "other_avg": 182.4,
      "supermarket_avg": 179.1,
      "tank_saving_gbp": 1.81,
      "comparison_station_count": 6389,
      "supermarket_station_count": 1621
    },
    "petrol": {
      "saving": 2.0,
      "other_avg": 161.5,
      "supermarket_avg": 159.5,
      "tank_saving_gbp": 1.1,
      "comparison_station_count": 6273,
      "supermarket_station_count": 1621
    },
    "premium_diesel": {
      "saving": 7.7,
      "other_avg": 199.0,
      "supermarket_avg": 191.3,
      "tank_saving_gbp": 4.24,
      "comparison_station_count": 4104,
      "supermarket_station_count": 153
    },
    "premium_petrol": {
      "saving": 7.2,
      "other_avg": 179.7,
      "supermarket_avg": 172.5,
      "tank_saving_gbp": 3.96,
      "comparison_station_count": 5095,
      "supermarket_station_count": 1211
    }
  },
  "historical_station_universe_count": 8160
}