Afghanistan: UK’s civilian evacuations from Kabul to end today, says head of armed forces
General Sir Nick Carter, the Chief of the Defence Staff, said Operation Pitting - the effort to evacuate UK nationals and eligible Afghans from Kabul airport - had "gone as well as it could do in the circumstances".
And speaking to BBC Radio 4's Today programme, he said there were now "very few" civilian flights remaining.
"We're reaching the end of the evacuation, which will take place during the course of today," he said.
"And then of course it'll be necessary to bring our troops out on the remaining aircraft."
Sir Nick also spoke of the "heartbreaking" judgment calls military personnel had been forced to make.
"We haven't been able to bring everybody out and that has been heartbreaking, and there have been some very challenging judgments that have had to be made on the ground," he said.
"And I think that, you know, people like me, who have had a very, very long association with this country, we are forever receiving messages and texts from our Afghan friends that are very distressing, so we're all living this in the most painful way."
Labour's shadow defence secretary John Healey told Sky News he also expected the operation to wrap up within 24 hours, as flights continued to arrive overnight on Friday and into Saturday morning at RAF Brize Norton in Oxfordshire.
Mr Healey said: "This is the brutal truth, despite getting more than 14,000 people out, there are probably 1,000 Afghans who have worked with us over two decades in Afghanistan, helped our troops, our aid workers, our diplomats, that we promised to protect, but we're leaving behind.
"And I know those troops in particular will feel our failure on this as a country is a betrayal of many of those who risked their own lives to work alongside us."
While British ambassador to Afghanistan Sir Laurie Bristow said it was "time to close this phase" of the evacuation operation from Kabul airport.
In a video posted on Twitter, Sir Laurie - who has remained in Afghanistan processing refugees - said: "It's time to close this phase of the operation now, but we haven't forgotten the people who still need to leave.
"We'll continue to do everything we can to help them. Nor have we forgotten the brave, decent people of Afghanistan. They deserve to live in peace and security."
The Ministry of Defence said on Friday that once the final civilian evacuations were complete, this would free up space on military flights for diplomats and personnel.
But Tom Tugendhat, a Tory MP who fought in Afghanistan, said he was disappointed the evacuation effort was coming to an end.
The former army officer and now chairman of the Commons Foreign Affairs Select Committee told BBC Breakfast: "I'm extremely sad about this and I very much hope that it might go beyond the August deadline but we found out a few days ago that it wasn't, so I was expecting it.
"It still leaves me extremely sad that so many of my friends have been left behind."
Questioned over whether the UK could have done better when withdrawing personnel from Afghanistan, Mr Tugendhat said: "In the last week, probably not, but this has been a sprint finish after a not exactly sprint start."
"There are going to be questions to be asked to the Foreign Secretary about the processing in the UK in recent weeks that we're going to have to see what the answers are."
Defence Secretary Ben Wallace previously admitted there were between 800 and 1,100 Afghans eligible under the Afghan Relocation and Assistance Policy (Arap) scheme who would be left behind, while around 100 and 150 UK nationals will remain in Afghanistan, although Mr Wallace said some of those were staying willingly.
But a number of MPs have said that based on the correspondence they had received asking for help, they thought this was an underestimation.
In the early hours of Saturday, the US military conducted an airstrike against a member of so-called Islamic State in Afghanistan who was believed to be involved in planning attacks against the US in Kabul.
The strike killed one individual, and US spokesman navy captain William Urban said they knew of no civilian casualties.
It comes after two British adults and the child of a British national - understood to be a teenager - were killed in a bombing on Thursday, with another adult and child injured.
The BBC reported a London taxi driver, Mohammad Niazi, had been killed in the Kabul attack after flying out to help his family return home, but it was not confirmed if he was one of the UK nationals referred to by the Foreign Office.
Meanwhile, The Times reported that the injured child, believed to be aged under 10, was related to one of the adults killed.
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