The UK will continue its operation to evacuate people from Afghanistan despite the "despicable" attack at the capital's airport, Boris Johnson says.
Speaking after an emergency meeting, the PM pledged the UK would be working "flat out" until "the last moment".
But he also acknowledged the push was nearing its conclusion, with hours remaining.
Two explosions hit Kabul airport on Thursday, killing some 90 people - among them 13 US military personnel.
At least 150 people were also wounded in the attack, which the so-called Islamic State group say it was behind.
The Ministry of Defence (MoD) said there had been "no reported UK military or UK government casualties".
Figures released by the MoD on Thursday night showed 13,146 individuals had been flown out by the UK so far.
In an address on Thursday night, President Joe Biden also promised to carry on with the evacuation, which is due to end on 31 August.
He said the US would "not forgive" and "not forget" the attack, telling the perpetrators: "We will hunt you down and make you pay."
US commanders have said they are on alert for more attacks by so-called Islamic State, including possible rockets or vehicle-borne bombs targeting Kabul airport.
