UK may double troops in Afghanistan after Donald Trump request | UK news | The Guardian:
The new deployment could see hundreds more return to Afghanistan. The UK withdrew almost all of its combat troops from the country in 2014.
Faced with a Taliban resurgence, the US, which has about 15,000 troops in the country supporting the Afghan military, asked the UK and other Nato countries last summer to send reinforcements. Britain responded with an extra 85.