{
  "namespace": "uk_government_national_reference",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: DESNZ.",
  "licence": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "fuelDefinitions": {
    "FOUR_STAR_LRP": "Historical four-star / lead replacement petrol",
    "SUPER_UNLEADED": "Super unleaded (octane not specified)",
    "TWO_STAR": "Historical two-star petrol",
    "ULSD": "Diesel / ULSD",
    "ULSP": "Regular unleaded / ULSP (source label: Premium unleaded)"
  },
  "methodologyNotes": {
    "4.1.1": [
      "Note 1. These estimates are representative of prices paid on the nearest Monday to the 15th of the month. Estimates are based on information provided by oil marketing companies until December 1994. From January 1995, data from super/hypermarket chains has been included.",
      "Note 2. Data for Premium Unleaded and Diesel are sourced from a larger sample than the Weekly Prices statistics. As such these figures will be slightly different to those published weekly. ",
      "Note 3. These estimates are for deliveries of 2,000 to 5,000 litres; such deliveries attracted 8 per cent VAT from 1 April 1994. With effect from 1 September 1997 the rate of VAT was reduced to 5 per cent. ",
      "Note 4. Price index for supplies received by refineries in the UK from both indigenous and imported sources. It represents the average for the month calculated in sterling on a CIF basis.",
      "Blank cells in this table represent months where data was not reported.",
      "An r indicates revised data. An r in the date column indicates all data in the row has been revised. An r in a cell indicates that just that cell has been revised."
    ],
    "4.1.1 (Quarterly)": [
      "Note 1. These estimates are representative of prices paid on the nearest Monday to the 15th of the month. Estimates are based on information provided by oil marketing companies until December 1994. From January 1995, data from super/hypermarket chains has been included.",
      "Note 2. Data for Premium Unleaded and Diesel are sourced from a larger sample than the Weekly Prices statistics. As such these figures will be slightly different to those published weekly. ",
      "Note 3. These estimates are for deliveries of 2,000 to 5,000 litres; such deliveries attracted 8 per cent VAT from 1 April 1994. With effect from 1 September 1997 the rate of VAT was reduced to 5 per cent. ",
      "Note 4. Price index for supplies received by refineries in the UK from both indigenous and imported sources. It represents the average for the month calculated in sterling on a CIF basis.",
      "Blank cells in this table represent quarters where data was not reported.",
      "An r indicates revised data. An r in the date column indicates all data in the row has been revised. An r in a cell indicates that just that cell has been revised."
    ],
    "4.1.2": [
      "Note 1. Estimates are based on information provided by oil marketing companies until December 1994. From January 1995, data from super/hypermarket chains has been included. ",
      "Note 2. From October 1999, Four Star prices represent 'Lead Replacement Petrol' (LRP). Pump prices for both petrols are broadly the same.",
      "Note 3. The LRP series has been discontinued from September 2005 due to the low volume of sales.",
      "Note 4. From April 2001, Premium unleaded prices represent Ultra Low Sulphur Petrol (ULSP), which now accounts for virtually all Premium unleaded sold. The pump prices for both fuels were broadly the same.",
      "Note 5. From July 1999, diesel prices represent average prices for Ultra Low Sulphur Diesel which now accounts for virtually all diesel sold. Prices for the period March - June 1999 represent a mixture of both types of diesel as companies switched to only selling ULSD. Pump prices for both diesels are broadly the same.",
      "Note 6. These estimates are for deliveries of up to 1,000 litres; such deliveries attract 8 per cent VAT from 1 April 1994. With effect from 1 September 1997 the rate of VAT has been reduced to 5 per cent. ",
      "Note 7. These estimates are for deliveries of 2,000 to 5,000 litres; such deliveries attract 8 per cent VAT from 1 April 1994. With effect from 1 September 1997 the rate of VAT has been reduced to 5 per cent. ",
      "Note 8. Price index for supplies received by refineries in the UK from both indigenous and imported sources. It represents the average for the month calculated in sterling on a CIF basis.",
      "Blank cells represent quarters where data was not reported in this table."
    ],
    "4.1.2 (excl VAT)": [
      "Blank cells represent either times when there was no change in VAT or duty or are periods between time aggregations. The aggregation is recorded in the final month of the period. 4 star/LRP time series ended in August 2005, ULSP to ULSD differential started in February 2008. ",
      "An r indicates revised data. An r in the date column indicates all data in the row has been revised. An r in a cell indicates that just that cell has been revised."
    ],
    "4.1.3": [
      "Note 1. From October 1999 Four Star prices represent \u2018Lead Replacement Petrol\u2019 (LRP) which had replaced Four Star at 95 per cent of outlets at that time. Leaded petrol has now been phased out.",
      "Note 1. Pump prices for both petrols are broadly the same. The LRP series has been discontinued from September 2005 due to the low volume of sales.",
      "Note 2. From April 2001, Premium unleaded prices represent Ultra Low Sulphur Petrol (ULSP), which now accounts for virtually all Premium unleaded sold. The pump prices for both fuels were broadly the same.",
      "Note 3. From July 1999 diesel prices represent average prices for Ultra Low Sulphur Diesel which now accounts for virtually all diesel sold. Pump prices for both diesels are broadly the same.",
      "Note 4. Typical prices for deliveries of up to 1,000 litres of standard grade burning oil and between 2,000 and 5,000 litres of gas oil.",
      "Note 4. Prior to 1977, prices were for deliveries of 900 litres of standard grade burning oil and 2,275 litres of gas oil. Since April 1994 prices include VAT at a rate of 8% until September 1997 when the applicable rate was reduced to 5%."
    ],
    "Charts": [],
    "Contents": [],
    "Cover Sheet": [
      "Publication date: 27/08/2026",
      "Data period: New monthly road fuels data for August 2026 and crude oil data for July 2026"
    ],
    "Methodology": [
      "The data published in these tables are national average prices calculated from prices supplied by a sample of motor fuel companies and supermarkets.",
      "These monthly estimates use prices collected by the Department on the nearest Monday to the 15th of the month.",
      "Since 1 September 2021, the Unleaded figure reported inlcudes the new standard \"E10\" grade. This was implemented in Great Britain by companies as soon as the legislation was in place.",
      "On 1 November 2022 \"E10\" was also rolled out in Northern Ireland. Therefore, between 1 September 2021 and 31 October 2022 the unleaded average included differing grades under the umbrella of \u201cunleaded\u201d in our releases.",
      "Prior to 1977 price data was collated from a variety of sources. They were largely sourced from published scheduled wholesale prices of the oil companies to which retailers margins were added.",
      "From January 1995 sales by super/hyper markets were included in the price estimates."
    ]
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