Currently running in Lichfield, Staffs, the Midlands Co-op is running a deal where purchase of fuel gives a £3 voucher off a minimum £30 spend in the Coop store there. Possibly at other Midlands Co-op branches too? Doesn't seem to be a minimum fuel purchase requirement either ;)
Voucher is valid for use until 12th Sept, and garage staff say they're giving vouchers for the next 2 weeks approx.
Guess this is correct in this link, as a deal, rather than in vouchers. Thanks :)