Doctors at a hospital in north-west London have begun treating a Briton who contracted Ebola in Sierra Leone.

The man has been named as William Pooley, a 29-year-old volunteer nurse, by a US scientist who worked with him.

Mr Pooley was flown to RAF Northolt in a specially-equipped military aircraft on Sunday and taken under police escort to Hampstead’s Royal Free Hospital.

He volunteered to go to west Africa to care for victims of the Ebola outbreak which has killed almost 1,500 people.

It is the first confirmed case of a Briton contracting the virus during the current outbreak.