Hi, I was in a similar position last year when I moved over. I declared both the incoming rent and total salary for the year. The rent would be less than 5000 for 0708 and only added a little to 0607, so overall i still got a decent tax rebate. For the amount you are talking about, I think it is worth declaring and being above board, or you could not mention the house and see what happens. If you are working through a letting agency, they are required to check that you are registered as an absentee (overseas) landlord...