Spend over £50 in store, and receive 10p per litre off on-site petrol from BP, so collect Nectar points too.
This replaces their earlier spend £30, 5p a litre off, and is available at various stores - check yours before visiting!
This store sells food, homeware, electrical stuff, so is easy to get over £50 - sorry it's not more widely available all over the UK Fantastic if you're nearby, as filling up at say 60 litres could say you £6! WS14 9XU is store postcode for one of the stores, this one in Lichfield, Staffs.
Current price is 107.9 for unleaded