There have now been confirmed cases of the Omicron Covid variant in 22 places in England, the government has said.
A further seven cases have been confirmed in England in the latest update from the UK Health Security Agency (UKHSA), bringing the total number to 29.
Two new cases have been confirmed in both Buckinghamshire and South Northamptonshire.
Meanwhile London, Surrey and Oxfordshire have all confirmed new single cases.
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The list does not include Bolton in Greater Manchester, where health officials have said it is 'highly probable' that two Omicron cases have been found.
It is understood that health officials are awaiting laboratory confirmation that the cases are of the new B.1.1.529 variant, known as Omicron.
The UKHSA said that all the cases that have tested positive for the Omicron variant, as well as their contacts, are now isolating.
The full list of confirmed Omicron cases by local authority area is:
One case
Bexley, London
Brentwood, Essex
Chiltern, Buckinghamshire
Haringey, London
Lambeth, London
Lancaster, Lancashire
Liverpool, Merseyside
Newham, London
North Norfolk
Nottingham, Nottinghamshire
Oxfordshire
South Cambridgeshire
Spelthorne, Surrey
Sutton, London
Three Rivers, Hertfordshire
Wandsworth, London
Two cases
Barnet, London
Buckinghamshire
Camden, London
Lewisham, London
South Northamptonshire
Three cases
Westminster, London
Three new cases have also been identified in Scotland, bringing the nation's total to 13.
The UKHSA has said it is now carrying out targeted testing in the areas where positive cases have been found to identify any new infections.
Dr Jenny Harries, Chief Executive of UKHSA, said: “We are continuing our efforts to understand the effect of this variant on transmissibility, severe disease, mortality, antibody response and vaccine efficacy.
“Vaccination is critical to help us bolster our defences against this new variant – please get your first, second, third or booster jab without delay.
“A booster dose for everyone over 18 years is now recommended and will be available at a minimum of 3 months from your last primary course jab. Please take up this offer as soon as you are eligible to protect yourself, your families and your communities.
“Please make sure to wear a mask in line with government guidance, including on public transport and in shops, to help break the chains of transmission and slow the spread of this new variant.
“It is very likely that we will find more cases over the coming days as we are seeing in other countries globally and as we increase case detection through focused contact tracing. That’s why it’s critical that anyone with COVID-19 symptoms isolates and gets a PCR test immediately.”
