The governor of the Afghan province of Helmand is being moved to a new job in what President Hamid Karzai's office has described as a routine transfer.
The UK has more than 7,000 troops in Helmand
Asadullah Wafa is expected to take up a new post in the president's national security office.
Mr Wafa has been critical of the tactics of British troops in Helmand, a major centre of opium production.
He supported the expulsion last year of two Western diplomats accused of seeking talks with the Taleban.
Some 7,500 British troops are based in Helmand.
Mr Wafa took up his post as governor just over a year ago.
His deputy, Haji Pir Mohammed, was killed by a suicide bomber in the provincial capital of Lashkar Gah in January.