Release updates

This page records what we accepted and what we changed.

Current state. The observation record of the Fuel Finder file began on 18 October 2026. Expected cadence is two snapshots a day, as the Department for Energy Security and Net Zero publishes it. Because no window is complete, no area median, spread or brand figure is published yet, and the pages say so rather than showing a provisional number. Internal checks on this release: four passed, none failed.

There is no independent published total of reporting stations for this file, so our completeness check has a limit we state plainly. We verify that station keys are unique, that counts stay inside their bounds, and that figures reproduce from the kept files. That is internal consistency. It does not independently verify that the file was complete, and we do not claim otherwise. We look again for an independent total at every accepted file.

Changes to method will be listed here with their date: a new window definition, a changed publishing floor, a new measure, a measure withdrawn, or a corrected calculation. Ordinary movement of prices between files is not listed, because that is the subject of the site rather than a change to it.

Worked example, CR0. Stations reporting E10 petrol: 14 stations. Three scheduled collections of three due. They hold one distinct publisher release.