Posting here as I thought those of u that have just given birth most likely to know the answer. I've just posted the child benefit claim form that came in the bounty pack and I realised the second I put it in the postbox that I didnt put a stamp on it. Now this is either because I somehow registered in my subconscious that it was a prepaid envelope or its a classic case of baby brain! Does anyone still have the form from the bounty pack and if so, can u tell me if it is a prepaid envelope or if I've just done something really stupid?! Thanks :-)