Members of the public have a right to request access to information held by public authorities. The House of Commons and the House of Lords are separate public authorities. Requests for access to information should be directed to the relevant House which may hold the requested information.
Interested? All the information you need is here: http://www.parliament.uk/site-information/foi/
The Information Commissioner’s Office is the UK’s independent authority set up to promote access to official information and to protect personal information. Further information about relevant laws is available on the Information Commissioner’s Office website.