"The incredible courage and sacrifice of generations of British servicemen and women who have given their lives protects the freedoms that we enjoy today."
Prime Minister David Cameron joined the Queen and other members of the Royal Family for the Remembrance Sunday service at the Cenotaph in Whitehall.
Mr Cameron laid a wreath to commemorate those servicemen and women killed in all conflicts since the First World War. Deputy Prime Minister Nick Clegg and other political leaders also attended and laid wreaths.
Yesterday an Armistice Parade at Camp Bastion was attended by Defence Secretary Philip Hammond, following a visit to Kabul and Lashkar Gah.
The Prime Minister has also recorded a remembrance message to mark the day. Mr Cameron said:
Today we stop to say thank you. And to remember those who are no longer with us but whose sacrifice and valour will be honoured long after we are gone.