Our mortgage is with Lloyds TSB and we are renting our house in the UK out. While still in the UK, we made an appointment with the Mortgage Manager, told him our plans, he phoned the Mortgage people who gave us permission to rent out for a fee of 250 pounds which was then just added to our mortgage, so with a little bit of paperwork, we were all above board and legal. No hassles and no extra payments on our mortgage or anything like that.