John McDonnell

The Rt Hon John McDonnell is the Labour MP for Hayes and Harlington, and has been an MP continually since 1 May 1997.

Parliamentary career

Find out about the Parliamentary career of John McDonnell, including posts and roles held.

UK Parliamentary constituency boundaries have changed following a review in 2023. For more information read this insight from the House of Commons Library: ‘Boundary review 2023: Which seats will change in the UK?’