I understand Jacqui has been claiming £116,000 a year to stay at her sister's house in Peckham (esentially).
Here's the marksany answer: Claridge's. To put the amount of money we are paying for MPs to live in London and have a home in the constituency in some context, you can stay at a suite in Claridge's for £590 a night. That's a suite: Bedroom, Bathroom, sitting room in one of the best hotels in the world. If we put MPs up there for let's say 150 nights/year it would cost £88,000, less what discount you could get for booking in bulk.
If the MP is prepared to slum it, the Grosvenor is as little at £160 a night for a suite.
So how much would we save on expenses to provide the 550ish non-London based MPs with a suite in a top London hotel? Millions. Their own house would be in their contituency of course and how could they complain - Claridges is good enough for kings and presidents.
Correction (thanks, Dave E) the £116,000 was over 5 years. The allowance would stll get a nice suite in the Grosvenor or a std room at Claridge's.