It's around £1.97 per litre at Cranfield (apparently this includes 10p/litre that the aerodrome operator has added).
Whenever i land away I uplift fuel to full tanks. The thought of refuelling at home and lining greedy pockets irks me; even a couple of pounds saved elsewhere means that CU doesn't get any more of my hard earned cash
Cheapest I've found to date was Gloucester Airport at circa £1.65 per litre.