The RAC says that the UK has had some of the smallest reductions in fuel duty while prices are high.
https://www.bbc.co.uk/news/business-62371732
Amongst those that have made a reduction, only Luxembourg has had a smaller decrease. It's interesting they pick that out, as Luxembourg has some of the lowest prices anyway.
I drove to Germany and back a month ago, filling up in Luxembourg twice at €1.997 and €1.971 a litre. A couple of weeks later it was €1.836, then €1.749, now back up to €1.816
I usually reckon Luxembourg is 25 to 30 pence a litre cheaper than the best prices here. A couple of weeks ago that was 45 to 50 pence.
Somehow normal price competition here seems to have vanished, not only on car fuel, but stuff in the shops too, things up from £1.25 to £1.75, and so on.