The Government's chief medical officer has insisted the temperature of the nurse being treated for Ebola was checked before she boarded a flight from Heathrow to Glasgow.
Dame Sally Davies told Good Morning Britain that Pauline Cafferkey "was well" at the airport.
"She had no symptoms - her temperature was within the acceptable range. She would not be transmitting the virus, therefore she was cleared as fit to fly," Dame Sally said.
"Clearly queuing and things like that are unacceptable and we will review, but we will let people who are well travel because they will not infect the public," she added.
Dame Sally Davies has said that Pauline Cafferkey did not have a raised temperature, or any Ebola symptoms, when she boarded her flight at Heathrow airport.
She said "it would be safe to shake her hand" and that the risk to other passengers was very low.
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".
Chief Medical Officer Dame Sally Davies has said that she expects to see a "handful of cases" of Ebola in the UK in the coming months.
She said that while West Africa remains the focal point, "it will not be surprising if we have spillover into this country so I would expect a handful of cases over the next few months".
England's Chief Medical Officer has warned expanding waistlines have become normal and a tax on sugar may be needed to help the nation lose weight.
ITV News reporter Lewis Vaughan Jones reports:
Deaf and blind people may be at higher risk of developing dementia, England's Chief Medical Officer has warned.
Dame Sally Davies said although the data was not conclusive, investigating a possible link between sight or hearing impairment and diseases such as Alzheimer's could aid doctors' understanding of dementia.
Hard-drinking soap characters offer an "irresponsible" portrayal of excessive alcohol consumption, according to the Chief Medical Officer for England
Analysis of six weeks of soap operas and found characters drinking too much on 162 occasions, with negative consequences often left out.
However, Dame Sally Davies' report on the state of the nation's health points out that this kind of portrayal of drinking is not a modern phenomenon - every single one of Shakespeare's plays mentions alcohol at least once.
She also says that the way drinking is presented in popular culture is out of kilter with ordinary people's behaviour.
"Drinking to excess is not ‘normal behaviour’, and portraying it as such is irresponsible. Some 75% of the population does not consume excessive quantities of alcohol, and the proportion of the population which abstains from alcohol (15% in 2009) is increasing," she writes.
Being overweight or obese is in danger of becoming seen as normal, the Chief Medical Officer for England has warned.
Dame Sally Davies said she was "increasingly concerned that society may be normalising being overweight".
Her annual report on the state of the nation's health said excessive consumption of sugar, particularly in soft drinks, was one of the factors behind rising obesity.
Dame Sally is calling on food and drink manufacturers to tweak their products so they have less added sugar.
She also said a 'sugar tax' may need to be considered if the industry's efforts to make products healthier are not successful.