Courts stood as a Council candidate in Solihull in 2002 but was unsuccessful. Courts was elected a Conservative member of West Oxfordshire District Council in 2014. He was selected as the Conservative Party candidate to replace David Cameron—who had resigned as Prime Minister of the United Kingdom in July and from Parliament in September—as Member of Parliament in the 2016 Witney by-election. Courts retained the seat for the Conservatives in the 20 October 2016 by-election, but his majority of 5,702 was considerably smaller than the 25,155-strong majority Cameron won in the 2015 general election. He was sworn into the House on 24 October. He increased his majority to over 21,000 in the snap 2017 general election. Courts supported the successful 'Leave' campaign in the EU referendum on 23 June 2016. He is a member of the euroscepticEuropean Research Group, having subscribed in April 2017. Courts was appointed Parliamentary Private Secretary for the Foreign and Commonwealth Office in January 2018, but resigned as a PPS on 15 July 2018, in protest of the White Paper on Exiting the European Union and the Chequers Agreement. Courts' main Parliamentary interests are defence and foreign policy. He is credited by the House of Commons library with helping to lead the “parliamentary pressure” that led to the announcement of the Ministry of Defence's Combat Air Strategy, the programme for the eventual replacement of the Eurofighter Typhoon. He has become one of the leading parliamentary speakers on the Armed Forces, with a particular specialisation in the Royal Air Force. Courts represents RAF Brize Norton, the largest RAF base in the UK, and serves as the Vice Chair of the All-Party Parliamentary Group for the Armed Forces. On 8 May 2019, Courts initiated and led a parliamentary debate on 'Human Rights in West Papua.' This historic debate was the first time MPs had ever debated West Papua in the House of Commons. As Chair of the All-Party Parliamentary Group for Small and Micro Business, Courts has been a leading parliamentary campaigner for the interests of small businesses. Courts has consistently protested against the increasing bureaucracy and red face taping small firms, and called for a full review of the business rates system. Courts is known for his small state, libertarian leanings and identifies with the Austrian School of Economics. Regarding parliamentary procedure, Courts has been an outspoken critic of Early Day Motions, describing them as "parliamentary graffiti." Courts has said that EDMs are generally tabled by MPs on behalf of "lobbyists or groups keen to show themselves as doing something", that they are "politically impotent" and a waste of taxpayers' money. Courts currently serves on two Parliamentary Select Committees: the Transport Committee, which he was elected to in October 2018, and the Justice Committee, which he joined in January 2019. In August 2019, Courts was appointed Parliamentary Private Secretary to the Secretary of the State for the Environment, Theresa Villiers. Courts is a council member of the Air League.
Personal life
Courts lives with his wife and two young children in the village of Bladon. He is a member of St Martin's ChurchParochial Church Council. He has been a member of the Churchill Centre for many years, and reviews books about Churchill in the quarterly journal, Finest Hour. Courts is an accomplished blues guitarist and enjoys cycling, swimming, and hiking. He is also a diver, interested in the marine environment; he is a member of the Marine Conservation Society.