Lord Cameron has called on Moscow to reveal the location of a Russian-British dissident who disappeared from his penal colony to his lawyers.

The UK foreign secretary pledged to meet with Vladimir Kara-Murza’s wife, Evgenia, who said her husband was taken from a Siberian penal colony and his whereabouts were unknown.

Family and friends of Mr Kara-Murza urged Lord Cameron to act earlier today.

Now the foreign secretary has posted on X: “Russia must urgently provide Vladimir Kara-Murza’s lawyers with his whereabouts, following reports that he has been moved from Omsk to an unknown location.

“I’m deeply concerned for Mr Kara-Murza – a British national imprisoned in Russia for speaking out against the invasion of Ukraine. I stand with his wife and plan to meet her soon.”

Mr Kara-Murza, who suffers from a nerve disorder after surviving two poison attacks, was jailed for 25 years last April for treason and spreading “false information” about the Russian war in Ukraine. 

He denied the charges and said he was facing a show trial.