I noticed a few people mentioned the salt & vinegar chips not tasting the same as Walkers - So I thought I'd post a website my husbands sister sent to him. They've got walkers salt & vinegar crisps among alot of other British foods (and other things) that can be shipped over here. I'm not sure how much shipping goes for as he's yet to buy anything from there but he does plan to sometime soon.

http://www.britsuperstore.com/