Britons have been urged to join a Europe-wide minute's silence at 11am to remember the 129 people killed in the terror attacks on the French capital.
David Cameron will join world leaders at the G20 summit in Antalya, Turkey in observing the silence in remembrance of the victims.
The minute's silence is taking place at midday French time.
On Sunday evening, up to 20,000 people turned out for a candlelit vigiloutside the French embassy in the Danish capital, Copenhagen.
In Britain, hundreds observed a minute's silence in Birmingham city centre at a vigil for the Paris victims outside St Philip's Cathedral.
The vigil included a blessing by David Urquhart, the Bishop of Birmingham.
Bishop Urquhart told the crowd that the city stood "in solidarity" with the people of Paris, and that "we mourn those who lost their lives and those who were injured".
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