Just seen this quite a good offer for anyone who goes for a work lunch or something. I broke down into a list from o2's Website but I maybe wrong with how it's edited. But enjoy.
From o2's Website;
Enjoy snack time even more, with half price off any individual pack of crisps at selected WHSmith high street stores. The flavours available include;
PRINGLES Original, BBQ & Sour Cream -
POM BEARS Original
McCoy's Salt & Vinegar, Cheddar & Onion & Flamed Grilled Steak
Skips Prawn Cocktail
Hula hoops Original and Beef
ODONNELLS Irish Sea Salt
TYRELLS Sweet and Sour Popcorn, Sweet Chilli, Cider Vinegar and Lightly Sea Salt
WALKERS Cheese and Onion, Prawn cocktail, Ready Salted, Salt and Vinegar.
The offer excludes all 'Sharing Bags' over 50g. The RRP. of each bag of crisps varies from £0.59p - £0.85p meaning that your saving will vary from £0.30 - £0.45p depending on which bag you choose. The promotion is limited to one redemption per customer and is subject to availability, so hurry, grab yours before they all go. When they're gone, they're gone! Customers please note that there is a limited time window in which to both reveal and redeem your code. Please bear this in mind if you are in a queue or over 2 minutes away from the till point.