The woman in hospital in Truro with suspected Ebola has been given the all-clear.
But things are not so good for the other British case:
UK Ebola nurse Pauline Cafferkey 'in critical condition'
A British nurse who was diagnosed with Ebola after returning from Sierra Leone is now in a critical condition, the London hospital treating her has said.
The Royal Free Hospital said
it was "sorry to announce that the condition of Pauline Cafferkey has gradually deteriorated over the past two days".
Ms Cafferkey, from South Lanarkshire, was given an experimental anti-viral drug and blood from disease survivors.
Meanwhile a patient in Swindon is currently being tested for Ebola
Great Western Hospitals NHS Foundation Trust confirmed it was testing an individual with a history of travel to west Africa as a "precautionary measure" - but said those using the hospital should not be concerned.
Ms Cafferkey, a public health nurse, was diagnosed with Ebola in December after volunteering with Save the Children in Sierra Leone.
On Saturday Prime Minister David Cameron said on Twitter:
"My thoughts and prayers are with nurse Pauline Cafferkey who is in a critical condition with Ebola."
Health Secretary Jeremy Hunt also expressed his concern, adding: "I know Dr Mike Jacobs and his team at the Royal Free Hospital are working tirelessly to provide her with the best possible care."
Scotland's First Minister Nicola Sturgeon tweeted
: "My thoughts are with Pauline & her family at this extremely difficult time. Thanks to all who are caring for her."
Ms Cafferkey had travelled home via Casablanca, Morocco, and London's Heathrow Airport.
She was screened for the disease at Heathrow where she told officials she believed a fever might be developing.
Her temperature was taken seven times in total, six of which were within 30 minutes, and was normal each time, so she was allowed to fly home to Scotland.
The government's chief medical officer, Dame Sally Davies, has said the case raises questions about airport screening procedures.
Ms Cafferkey was part of a group of up to 50 NHS healthcare workers who volunteered in Sierra Leone
Ms Cafferkey was later placed in an isolation unit at Glasgow's Gartnavel Hospital after becoming feverish, before being transferred by RAF Hercules plane to London and on to the Royal Free's specialist treatment centre.
Officials from Health Protection Scotland have spoken to all 71 people aboard the British Airways flight from Heathrow to Glasgow that Ms Cafferkey took - a Public Health England (PHE) spokeswoman has said.
And all 101 UK-based passengers and crew aboard the Royal Air Maroc flight from Casablanca to Heathrow have been contacted by PHE officials.
The remaining 31 international passengers on the flight were being traced by international health authorities, the spokeswoman added.