Mike Penning has been the Conservative Party MP for Hemel Hempstead since 2005. He was a shadow health minister from 2007 to 2010. He was Parliamentary Under-Secretary (Department for Transport) (Roads and Motoring) from 2010 to 2012. In 2012, he was appointed a Minister of State at the Northern Ireland Office. He was appointed as a junior minister at the Department for Work and Pensions in October 2013.
In July 2014, he was appointed as Minister of State at the Home Office and Minister of State at the Ministry of Justice.
In the 2015 general election, Penning was re-elected with a majority of 14,420. 
- Heather Mole - Director, Buttermountain Ltd (providing websites/e-newsletters for MPs) 
- Jonathan Mole - Director, Buttermountain Ltd 
- Ronald Moss 
- Susan Stow 
- Mike Penning, www.parliament.uk, accessed 7 October 2013.
- Michael Moore axed as Scottish secretary as reshuffle begins, BBC News, 7 October 2013.
- Ministerial appointments: July 2014, Prime Minister's Office, 15 July 2014.
- Conservative Party holds Hertfordshire seats BBC News, 8 May 2015, accessed 18 May 2015
- Register of interests of members' secretaries and research assistants, 23 March 2016, parliament.uk, accessed 22 April 2016