“The prime minister should be taking emergency action today but yet again he’s failed to grasp the seriousness of the crisis," Starmer said.

“Advising people to run away from police if they are uncomfortable or to wave down a bus is not the answer," a human rights group said.

Huge plumes of black-and-white smoke shot out from a point in the volcanic ridge where scientists had been closely following the accumulation of molten lava below the surface.

“Partly I just want to hear that this is a top priority and that Nazanin and the others who are being held as bargaining chips will be brought home," husband Richard Ratcliffe has said.

“These Conservatives can’t be defeated next time unless we Liberal Democrats win Tory seats,” he said.

Work is only allowed for those who cannot be replaced by men, the interim mayor of Afghanistan’s capital said, detailing the latest restrictions on women by the new Taliban rulers.

She said Britain would always be a “fierce champion” of freedom around the world, but that freedoms "need to be defended".

Some 1.5 million people will be contacted and encouraged to use the National Booking Service.

On Monday, a passenger said the immigration process in Terminal 2 was “incompetent, ridiculous”, adding that he was forced to wait for more than five hours with “no water, no bathroom”.