Not part of this thread, but I've just found out that the you can now exchange non-barcoded stamps up until July, as the deadline has been extended.
Also, if your post office doesn't have the form to return them (mine doesn't and it is a main branch) and you can't print one, you can ask them to post one; I've just done that.
I am very angry about the whole situation of stamps becoming obsolete as we were told that all stamps marked 1st or 2nd (and more recenly large letter) would last for ever, and we were advised to buy some before each price increase. I have loads of books of them so could lose a lot of money if I don't act, and I can't even remember when I last used one.
I am also angry about another promise that has been broken, that pensioners would get a free TV licence. It was touch and go whether the triple lock promise would also be broken.