Commonwealth amassadors joined thousands of war veterans at the Cenotaph in London to remember those who died in World War One.
Queen Elizabeth joined the British prime minister Tony Blair and leaders of the main political parties to remember the country's war dead by observing a two-minute silence before placing wreaths at the base of the monument.
The ceremony marks the 1918 armistice that ended World War One but honours all Britain's war dead, including the 97 troops who have died serving in Iraq since the conflict began in March 2003.
Around 8,000 veterans and 1,700 civilians attended the memorial on Whitehall, just a few hundred metres from the Houses of Parliament.
Memorial services were also held across Britain and Northern Ireland.
In Belfast, wreaths were laid by the Lord Mayor, Councillor Wallace Browne and Stormont Minister Lord Rooker.