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John Mark Castle


Mark Castle, RCVS Council memberMark Castle is the Chief Executive of the Field Studies Council, an environmental education charity, which he joined from the charity, Victim Support. Prior to that he was Chief Executive of the Association of Police and Crime Commissioners, which he joined directly from the British Army.

Mark was born in Irvine, Ayrshire. He joined the British Army from school in 1978 and in a career that spanned 31 years he trained and taught at the Royal Military Academy, Sandhurst, graduated from the Army Staff College and commanded his regiment, the King's Own Scottish Borderers. During his service he travelled extensively and served on operations in Northern Ireland, Bosnia, and Iraq.

Mark lives in Shropshire and is married to Frances with three children. They have three dogs and two horses.

Council Member category

  • Appointed lay member: 2018-2025

Committee membership

  • Advancement of the Professions Committee
  • Registration Committee
  • Finance and Resources Committee
  • Fellowship Board

Declaration of interests



Relevant financial interests, eg shareholdings, bonds and derivatives




Appointments to other bodies

Fellow, Royal Society of Arts (FRSA): Fellow 2016

Lay member, House of Lords Conduct Committee: January 2020 - present

Membership of other veterinary or allied organisations



Field Studies Council: 2018 - present

Victim Support: 2014 - 2018

Association of the Police and Crime Commissioners: 2009 - 2014

British Army: 1978 - 2009

Qualifications (other than veterinary qualifications listed in the Register)


Interests relating to immediate family or close friends


Other relevant information