The ninth confirmed case in the UK is believed to be a Chinese national who flew into London.
Chief medical officer Chris Whitty said the woman was transferred to a specialist NHS centre at Guy’s and St Thomas’ in central London.
Prof Whitty said the patient had contracted the virus in China.
Sources say she developed symptoms after landing at Heathrow, called NHS 111 and then tested positive.
It comes after a senior health official warned more UK cases were “highly likely”.
