Details of the MP expense claim system budgets can be found on the website of the Independent Parliamentary Standard Authority.
Office, Staffing and Accomodation expenses are subject to a budget cap, only travel and subsistence claims are unlimited.
Staff member trip from Poulton (nearest to constituency accomodation) to Westminster dan train const-westmin may15 Between London & Constituency From: Poulton le Fylde To: Euston