The Philippines submitted the first sequences of the variant, with Denmark so far reporting the highest number of samples – 6,411 cases.
India, Sweden and Singapore are the other countries who have announced more than 100 samples, with 530, 181 and 127 cases respectively.
The UKHSA said the emergence of the altered form of Omicron is not unexpected.
Covid Incident Director Dr Meera Chand said: “It is the nature of viruses to evolve and mutate, so it’s to be expected that we will continue to see new variants emerge as the pandemic goes on.
