I would not pay 15p for a plastic bag and I don't think it's got anything to do with being green. It's a money-maker.
I generally shop at Sainsburys, often get my shopping online but I like to shop for fresh goods, and I have 6 "bags for life" that live in my car boot. Every other time I go to Sainsburys I actually remember to take the bags in with me. On the days I don't remember I pile all the stuff into the trolley, after the checkout, and pack it all in the car park. It's a pain in the arris.
I like Morrisons for fresh fish and I also like M & S for the rather nicer stuff. I cannot take a Sainsburys bag into either of these, because I am a wimp, so I have a very snazzy green shopping bag from Next for use there. I also have a folding bag that lives in my handbag. On the rare occasions that I remember to use this bag it takes me about an hour and a lot of bad language to refold it.
