Chief Medical Officer Dame Sally Davies has said that Pauline Cafferkey, the Glasgow nurse who has contracted Ebola, posed a "very low risk of infectivity for anyone else" on the flights she travelled on.
She said the screening procedures at Heathrow airport would be looked at, but that she was satisfied they were sufficiently robust.
She added: "It is very important that people recognise the role that our volunteers are playing [in countries dealing with Ebola outbreaks] ... and we hope and expect other volunteers to continue to go out".
Colleagues of a British nurse who contracted Ebola in Sierra Leone tell ITV News about why they have stayed on the frontline of the disease.
As it reaches nine months since the Ebola outbreak started we take a look at the timeline of events leading up to the spread of the virus.