The UK is in talks with the Taliban to secure safe passage out of Afghanistan for a number of British nationals and Afghans who remain there.
The talks, involving UK officials and senior Taliban members, are taking place in Doha, Qatar, No 10 said.
The defence secretary is understood to have told MPs that between 150 and 250 people eligible for relocation – plus their families – remain in the country, reports BBC.
It comes after a Taliban pledge to allow further departures.
Foreign Secretary Dominic Raab will face questions from MPs later over his handling of the UK’s withdrawal from Afghanistan.