13 November 2011
Last updated at 13:56
The Queen laid a wreath at London's Cenotaph as part of a Remembrance Sunday event to honour the UK's war dead which saw more than 7,000 ex-servicemen and women march past her.
The Queen was joined by other members of the Royal Family during the ceremony at the Cenotaph, including Camilla, Duchess of Cornwall, Catherine, Duchess of Cambridge and Sophie, Countess of Wessex.
Events took place across the UK to mark Remembrance Sunday. In Liverpool, a ceremony was held at St George's Hall.
In Edinburgh, veterans took part in a Remembrance Sunday parade on the city's Royal Mile.
War veterans in Northampton passed by the Guildhall as part of the city's commemorative events.
The Most Reverend Clive Handford presided over an act of remembrance at Halifax Minster.
The Garden of Remembrance at Royal Wootton Bassett was adorned with crosses and poppies. People from different generations visited to pay their respects.
Remembrance Day events were not limited to the UK. British military personnel took part in a commemorative parade at Lashkar Gah base in Helmand province, Afghanistan.
Soldiers from the Alpha Grenadier Company (The Black Watch), 3rd Scots Battalion, who attended a Remembrance Day Service at Patrol Base Kalang at Nad e Ali, in Afghanistan, were among those serving abroad who took part in events to pay their respects.