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.
Rail Travel of London staff from London to the constituency and back. London-constituency MP & Staff From: Stratford International To: St Leonards Warrior Square
Constituency staff working in London (travell from constituency to London (return)) London-constituency MP & Staff From: St Leonards Warrior Square To: London Terminals