Never quite sure what the going rate is for renting a room close to the Houses of Parliament, but I bet it's not £950 a month.
I'm afraid the system is as much at fault as those who take advantage of it. It would appear that he did rent the accomodation he claimed for even though it was from his partner, and as such he broke the rules.
Those who really got me were the likes of Elliot Morley who was still claiming for a mortgage he'd paid off about two years earlier, but forgot about, and the female MP from Luton who claimed for work to cure dry rot at not her constituency home, nor even her Westminster home, but at a house in Southampton. Without a shadow of a doubt those two should be charged with fraud and tried in a court of law.