City-dwellers paused for two minutes' silence in memory of fallen soldiers this morning, while Londoners stopped in their tracks at their workplaces, landmarks and on the streets.
Lloyds of London ground to a halt and 11am was marked by the traditional ringing of the Lutine bell in the insurer's atrium.
Brokers gathered on balconies to observe the silence.
Staff at the City of London corporation joined the city's police force at the Guildhall to remember the nation's war dead.
In Trafalgar Square crowds gathered to hear music and readings at the Royal British Legion’s Silence in the Square event.
Armistice Day, 11th hour of the 11th day. In Trafalgar Square. pic.twitter.com/Sta13OtdIN— Anthony Pereira (@vorbix) November 11, 2016
Members of the public were invited to place poppy petals into the fountains.
Scottish football fans in town for the Scotland v England world cup qualifier tonight were also seen in Trafalgar Square to remember soldiers killed in action.
At 11am Tower Bridge was raised for a navy vessel to pass through.
Staff gathered in the corridors of The Ritz.
At the Imperial War Museum, a bugler played the Last Post.
People gathered to mark Armistice Day at the Somme memorial in Bristol. Figurines representing each of the 19,240 lives lost on the first day of the battle have been laid outside the city's cathedral.
Prince Harry led a remembrance service at the armed forces memorial in Staffordshire.
The two minutes’ silence was observed in the House of Commons, which is currently being used by the UK Youth Parliament.
On Sunday, poppies and war poetry will be projected onto Big Ben.