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John Mark Castle

John Mark Castle

Biography

Mark 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: 2018-2029

 

Committee membership

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

 

Declaration of interests

DirectorshipsFSC Trading, Hire a Canoe (subsidiary company of FSC Trading)
Relevant financial interests, eg shareholdings, bonds and derivativesNone
ConsultanciesNone
Appointments to other bodies

House of Lords Conduct Committee: Lay member, January 2020 – 12 June 2025

Trustee of King’s Own Scottish Borderers (KOSB) Museum Fund and The KOSB Regimental Association, December 2025 - present

Membership of other veterinary or allied organisationsNone
EmploymentCEO of the Field Studies Council, 2018 - present
Qualifications (other than veterinary qualifications listed in the Register)OBE
Interests relating to immediate family or close friendsWife (Frances Castle MBE) is a Trustee of the Armed Forces Equine Charity
Other relevant informationNone