Labour activists reportedly compared Britain’s missile defence system to “gas chambers” ahead of a peace protest attended by Jeremy Corbyn on Saturday.

According to The Sun, anti-war members of Labour’s CND distributed a memo that compared Trident to the gas chambers used by the Nazis during the Second World War.

The memo reportedly read: “While no technology is ever ‘un-invented’, we regularly see an end to use or production, particularly where a technology is outlawed for humanitarian or legal reasons, such as the gas chambers of the Second World War”.

Labour MP Toby Perkins told The Sun that it was “a crazy and offensive thing to say,” adding: “There is no credible comparison between a self-defence nuclear deterrent and the gas chambers, which were not a weapon of war but a method of slaughter.

“To suggest the gas chambers were used to win the war, suggests that there was a time when they were acceptable which is not the case.”

The memo was distributed ahead of the Trafalgar Square peace rally on Saturday, which was attended by Labour leader Mr Corbyn.

At the event, he hit out at plans to renew the UK's Trident nuclear deterrent.