The names of 120 servicemen and women who have died serving in Afghanistan have been read out during a protest marking the tenth anniversary of the war.
Hundreds of people attended the Stop the War Coalition demonstration in Trafalgar Square, led by a former soldier who refused to fight and a 106-year-old peace activist.
Lance Corporal Joe Glenton, who was jailed for refusing to serve, read out a letter to the Prime Minister signed by British and American former servicemen.
"We are making this statement in defiance of the propaganda and the lies in support of the so-called War on Terror for the last 10 years," he said.
"We know that these wars have nothing to do with democracy or security or women's rights or peace or stability. They are fought for money and power and nothing else.
"Our comrades' blood has lubricated the ambitions of the few."
Hetty Bower told demonstrators how she remembered the start of the First World War, and the "lies" that are still told in order to justify conflict.
"I hear my father clearly saying, "So, we are at war. This is where the lies begin"; And begin they did," she said.
"The lies have changed, but they continue. May peace in the world prevail."
Other people who addressed the crowd included Lauren Booth, the sister-in-law of former British Prime Minister Tony Blair, campaigner Anas Altikriti and journalist Seumas Milne.