New Coronavirus case being treated at St Thomas's Hospital in Westminster opposite Parliament

The third patient to be diagnosed with coronavirus in the UK is thought to have been diagnosed in Brighton and was transferred to St Thomas' Hospital in London, where there is an infectious disease unit, on Thursday afternoon.

Two other patients are still being treated at the Royal Victoria Infirmary infectious diseases centre in Newcastle. One is a student at the University of York while the other is a family member. They had travelled from China in the days before their diagnosis.

The Government is now urging travellers from countries including Thailand, Singapore, Japan and South Korea to self-isolate if they begin to feel unwell.

Other countries on the list are Hong Kong, Taiwan, Japan, Malaysia, South Korea and Macau, as well as mainland China.

Anyone arriving from these locations should stay indoors and avoid contact with other people if they develop symptoms such as a cough, fever or shortness of breath, the advice warns.

Until Thursday, this advice only related to people travelling from Wuhan in China.

The UK Foreign Office has advised Britons in China to leave if they are able to.