Members of the Honourable Artillery Company fire a gun salute in front of Tower Bridge to mark the 70th anniversary of Queen Elizabeth II's accession to the throne, London, UK, February 7, 2022. /CFP

A member of the Honourable Artillery Company loads a canon for the gun salute in front of Tower Bridge, London, UK, February 7, 2022. /CFP

Members of the King's Troop, Royal Horse Artillery ride ahead of a gun salute in Green Park to mark the official start of the Platinum Jubilee, London, UK, Monday, February 7, 2022. /CFP

Queen Elizabeth II acceded to the throne on the death of her father King George VI on February 6, 1952. The 95-year-old monarch is the only queen or king in the country's long history to have ruled for 70 years. /AP