Thousands of British nationals trapped in Sudan have been warned rescue flights cannot continue indefinitely, with fears the ceasefire could break as early as tonight.
Thousands of terrified Britons - many of whom have risked their lives to reach an airbase near Khartoum - are now being warned they might not be able to be flown to safety.
NHS doctors have queued for hours at the airfield in the Sudanese capital after risking their lives to reach the RAF planes - only to be turned away by British officials at the evacuation site.