Just got the Sainsburys Sandwich Deal which includes a sarnie of your choice, a packet of crisps (now includes all Walkers incl small sensations bag) or fruit and a drink. But at the moment the new bigger bottles of Pepsi (600ml) is BOGOF too.
So for £3 you get (for example):
TTD BLT Sandwich
Walkers Sensation Crisps (40g)
2 600ml bottles of Pepsi Max
worth £5.53, you pay £3.00 - nice!