In evidence submitted to the foreign affairs select committee, the Ministry of Defence said: “[There] is historical evidence of financial donations to Daesh [IS] from within Gulf states. Furthermore, it is understood that family donations are being made to Daesh, through the unregulated Alternative Value Transfer Systems (AVTS).”

The MoD said Turkey, Saudi Arabia, Kuwait and Qatar have played an “important role” in the anti-IS coalition, but officials from the Foreign Office said “some governments in the region may have failed to prevent donations reaching ISIL (IS) from their citizens”.