UK's Queen Elizabeth II to lead ceremonies marking 70th anniversary of end of war with Japan

Britain's Queen Elizabeth II, centre and Philip, the Duke of Edinburgh arrive at St Martin-in-the-Fields, in London for a service of commemoration marking the 70th anniversary of VJ Day, Saturday Aug. 15, 2015. Queen Elizabeth II is leading ceremonies in Britain to mark the 70th anniversary of the victory over Japan during World War II. (Hannah McKay/PA via AP) UNITED KINGDOM OUT (The Associated Press)

Britain's Queen Elizabeth II, centre and Philip, the Duke of Edinburgh arrive at St Martin-in-the-Fields, in London for a service of commemoration marking the 70th anniversary of VJ Day, Saturday Aug. 15, 2015. Queen Elizabeth II is leading ceremonies in Britain to mark the 70th anniversary of the victory over Japan during World War II. In the background is Prince Edward, the Earl of Wessex. (Hannah McKay/PA via AP) UNITED KINGDOM OUT (The Associated Press)

Britain's Queen Elizabeth II , meets WWII veteran Robert Hucklesbury, at St Martin-in-the-Fields Church, in London, as they attend a service of commemoration marking the 70th anniversary of VJ Day, Saturday Aug. 15, 2015. Queen Elizabeth II is leading ceremonies in Britain to mark the 70th anniversary of the victory over Japan during World War II. (Arthur Edwards/Pool Photo via AP) (The Associated Press)

Queen Elizabeth II is leading ceremonies in Britain to mark the 70th anniversary of the victory over Japan during World War II.

The monarch and other members of the royal family will commemorate the event at a church service Saturday and a wreath laying ceremony. Veterans of the conflict and former prisoners of war are also set to join the ceremony at St. Martin in the Fields.

Afterward, veterans, internees and members of the military will walk through central London toward Westminster Abbey in a special parade.

London's police force has reassured participants after media reports that extremists intend to target the ceremonies. Scotland Yard Commander Dave Musker says police have worked closely with the Ministry of Defense and the Royal British Legion to make sure the ceremonies pass peacefully.