Went into Tesco Express Euston Road and found several absolute bargains.
Highlight was 16 (8+8) blue ribband for 40p, currently costs £2.49 for the same amount online.
Other highlights were:
8 breakaways - 40p
6 bottles of mineral water - 51p
1.5 Litre Highland Spring Sparkling Water 22p
8 Cadbury's Caramel Biscuits -46p
Obviously this could just be local but there was official price tickets.