The Independent Parliamentary Standards Authority (IPSA) oversees all MPs' expenses, setting the rules for what can be claimed and approving and paying claims.
IPSA publish data in tranches of two or three months together and you can see my claims for the latest period by clicking here and following the instructions on the website.
On their website, IPSA also explain what the different categories of expenditure are. Please note that the scheme is revised regularly and some of the categories changed between the financial years 2010 - 11 to 2011 - 12.