Research
The Commons Library publishes politically impartial policy analysis and statistical research, free for all to read. Explore quick-read articles, in-depth research, and interactive data visualisations.
Browse our services
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Training and events
The Commons Library arranges inductions, training and events for MPs, MPs' staff and parliamentary staff.
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Resources
Find books, journals, online databases, parliamentary materials, and more. These resources are only available to users with a parliamentary login.
Make a request for information and research
MPs and those who work for them can request information and research from our team
of subject specialists. Our specialists answer requests related to legislation, policies, constituency-level statistics and more.
All requests are confidential. We do not share requests or responses with anyone outside of our service, including other MPs and their staff.
More information about this service, including how to submit a request and our fair use policy, is available on the parliamentary intranet.
Resources for MPs
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Working with HM Revenue and Customs: Guide for MPs (Intranet link)
A guide from HM Revenue & Customs explaining the range of services offered to help with personal tax enquiries, and to support MPs and their staff in dealing with tax-related enquiries from constituents.
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Tax and National Insurance contributions: Guide for MPs and Ministers
A guide by HM Revenue & Customs with advice for MPs and Ministers about personal tax and National Insurance contributions (NICs).
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