AFAIK, there is a surcharge (5p) on plastic bags in Scotland, Wales, NI and Eire but not yet in England (I believe it may come in under plans after the next election in May)
Round here too. The other day I was at one of those hopeless self-service tills and I asked the woman-in-charge-for-when-the-tills-break-down if they have any bags. "Yes", she said, "5p each". So I left carrying the loose items.
It's not the money; although a tight-fisted Yorkie, I can run to 5p. It's the principle. I can't stand being dictated to by unelected foreigners. The sooner we're free, the better. Vote UKIP.