Armstrong participated in '' VE Day 70 : A Party to Remember '' on 9 May 2015 , a televised commemorative concert from Horse Guards Parade in London , where he sang " We Must All Stick Together " by Ralph Butler and Raymond Wallace , and " London Pride " . He sang in '' Songs of Praise : The Big Sing '' , broadcast on 20 September 2015 , a special programme from the Royal Albert Hall to commemorate Queen Elizabeth II becoming the world 's longest-serving monarch . Armstrong sang '' I Would Be True ''
VE Day 70 : A Party to Remember
VE Day 70: A Party to Remember
Alexander Armstrong