Police and the Army provide security at Buckingham Palace during Operation TEMPERER, 2017

Digital photograph taken by Sergeant Rupert Frere, Royal Logisitic Corps, 2017.

A member of the Coldstream Guards with an armed police officer at Buckingham Palace, during the Changing of the Guard ceremony.

Operation TEMPERER, the mobilisation plan for military support to the police service following a major terrorist attack was put into effect for the first time on 23 May 2017, a day after a suicide bomb attack at the Manchester Arena. The operation was scaled back after the 31 May Bank Holiday.

From a collection of digital photographs associated with operation TEMPERER, 2017.