Since buying the house almost a year ago we have recieved all the old owners mail. Everything from car insurance and bank statements to birthday cards and junk mail. I've been returning everything to sender and for the last couple of months letters have greatly reduced and have almost stopped. It was my birthday the other day and today a birthday card came in the post. I didn't look at the name on the envelope as it was clearly a birthday card so just opened it like a giddy child wondering who it could be from. Well it wasn't for me but the previous owners son and £50 fell out. I'm not sure what to do. I have no forwarding address and I can't return this to sender.