The Bristol variant comes from the Kent variant, but has an additional mutation, known as E484K.
Of the 21 cases linked to the newly-classified “variant of concern”, which has been labelled VOC-202102/02, 14 were in Bristol, four in Manchester, and the remaining three were scattered elsewhere across England.
Meanwhile, another variant has been identified in Liverpool, and remains under investigation.
This variant also contains the E484K mutation, with a total of 55 cases linked to the variant.