Saw a poster today, I believe the deal is Buy over 35L fuel at a BP/wild bean cafe between 9th and 16th June and get a £5 Marks and spencers food voucher to use before the 30th June. Didn't see it on here. I saw it at my local BP garage, they have a wild bean cafe, I'm presuming it's Nation wide. If anyone knows more details, or it's been on already, let me know :)
Edit: £5 off a spend of £15!