The life of a British man arrested with his wife by the Taliban and taken to a maximum-security prison is in “serious danger”, their daughter has warned.

Peter Reynolds, 79, and his wife Barbie, 75, were detained by Taliban militants as they travelled to their home in Bamyan province on Feb 1.

They were arrested with an American friend, Faye Hall, who had rented a plane to travel with them, and a translator from Rebuild, the couple’s training business.

Mr Reynolds has now been moved to an undisclosed location, in a “shocking escalation”, their daughter said. 

Sarah Entwistle told the Sunday Times that Mr Reynolds was in a heavily-guarded prison and his health had “significantly deteriorated”.