House of Commons Information Office

The House of Commons Information Office (HCIO) provides information on the work, history and membership of the House of Commons.


The Information Office answers enquiries on the work of Members of Parliament


The Information Office produces a range of useful publications and lists

Contact us

The Commons Information Office can be contacted by phone, email or letter

Find Your MP

Related information

  • Telephone: 020 7219 4272
  • Email:
  • Text phone: dial 18001 followed by 020 7219 4272

The HCIO aims to answer all reference enquiries promptly, courteously and accurately.

In 2011 the HCIO answered: 

  • 27,085 phone calls
  • 8192 emails, 7541 of which were answered in one working day
  • 136 letters