Comment by bitdivision

> From 2 February 2026, you must submit fuel price updates within 30 minutes of any change.

https://www.gov.uk/guidance/report-your-fuel-prices-and-fore...

So looks as though the requirement to report was only just introduced, hence the considerable missing data.

Edit: BBC reporting here: https://www.bbc.co.uk/news/articles/cp80dpzdg37o