It was the same at most clubs/schools in the South, Compton Abbas, Old Sarum, Goodwood and Bournemouth all kept pricing the same until it was no longer possible to do so. I would expect pricing will stay the same for some time now, until they face the same situation.
Bournemouth has already started changing the petrol fleet to diesel FADEC which is keeping the price down, below petrol hire price increases. In fact they are offering a full 45 hour PPL in a FADEC PA28 with £400 free stuff including headset, exams and ground school for less than £7,000!
I flew a 172 2.0L diesel the other week - 4.5 US GAL perhour at 70% power 110kts IAS. Not bad methinks.