Crowds have been gathering in the capital to pay tribute to the people of France.
Over the weekend several London landmarks were lit in the colours of the French flag in honour of the people killed in the Paris terror attacks. Tower Bridge, Trafalgar Square and the National Gallery were among the major monuments bathed in red, white and blue.
It comes as huge numbers turned out to take part in a march in Paris on Sunday to mark the biggest counter-terrorism incident in France's history.
Seventeen people were killed during three days of attacks in Paris which targeted satirical magazine Charlie Hebdo, police officers, and a kosher supermarket. Londoners showing their respect in Trafalgar Square on Sunday night have been telling London Live why they took part in the rally.
News Editor of the Jewish News, Justin Cohen was there. He joined Wake Up London to discuss the event, and also explained why it is unsafe to be openly Jewish in Paris today.