Like some of the rest of you, I have been missing dill pickles a lot and searching everywhere for them. I decided to check in the little Polish shop that just opened in town, thinking that might be a good bet.
Well, they had some, and they are a much better substitute I think than anything you can get in Sainsbury's. Now they're not exactly like American pickles. I think they might be slightly more fermented than most of the ones in America are, and have the tiniest little hint of something like a sauerkraut taste. I don't find that this detracts and it's not noticeable at all when sliced on a sandwich.
They have a very good dill flavour. They are much like the sort of whole kosher dill pickles you'd get in a deli and are nice and sour, and slightly on the soft side, but still have a crunch to them. If you like the really crispy fresh packed garlicy ones that aren't fermented, then these aren't remotely similar.
If you live in a place with a Polish population, look for a shop selling Polish foods. It is worth a try. A fairly large jar cost a mere 99 p, which is a nice bonus.