Urgent testing for the South Africa variant of coronavirus is beginning in parts of England, after cases were found with no known links to travel or previous cases.
People in certain neighbourhoods in Surrey, London, Kent, Hertfordshire and Walsall are being asked to take tests whether they have symptoms or not.
Previous cases in the UK were traced back to South Africa.
Random checks on positive Covid tests identified cases caused by the variant
Public Health England has been testing 5% of all positive cases....
It is not known exactly how many cases have been identified, although the numbers are small.
In the Surrey town of Woking, there are two cases, while in Ealing there is just one.
This is very concerning, but it's good that they seem to being proactive for a change when they identify cases of the new variant.
If they are only testing 5% of positive cases though, there could be cases of the South African variant in other parts of the UK.
Will they tighten the lockdown further in the areas where the South African variant has been found, or do more to restrict travel from abroad? Maybe they will just rely on the mass testing.
Hancock will be giving more updates later no doubt during his 5pm press conference.