Horse Guards Parade, London, UK. 8th June 2019. Guests leave Horse Guards Parade after Trooping the Colour. Image: Chief of Staff of Sultan’s Armed Forces (Sultanate of Oman) Lt Gen Ahmed bin Harith al Nabhani with former UK Chief of Defence Staff Field Marshal Lord Guthrie, who was injured after falling from his horse in the 2018 Trooping the Colour. Credit: Malcolm Park/Alamy Live News.