Lord Lancaster served as a member of the UK parliament for 14 years until his retirement in 2019. Prior to his parliamentary career, he joined the Army from school before transferring his Commission to the Army Reserves where he continues to serve as a Brigadier and has seen active service in Kosovo, Bosnia and Afghanistan.
He was also a company director for the family firm, Kimbolton Fireworks.
In parliament, Lord Lancaster became a government minister in 2012 when he was appointed a Lord Commissioner of the Treasury. Later, he became Parliamentary Under Secretary of State for Defence Veterans, Reserves and Personnel before his appointment as Minister of State for the Armed Forces in 2017 until 2019. Lord Lancaster took up his seat in the House of Lords
in September 2020.