Of course, the fight against the virus is a global effort on.

We're constantly vigilant and looking around the world and is part of our surveillance.

On thanks to the impressive genomic capability off the South Africans, we've detected two cases of another new variant of coronavirus here in the UK Both are cases, both our contacts off cases who have traveled from South Africa over the past few weeks.

The chief scientific adviser on the chief medical officer and others met their South African counterparts over the last day.

And we are incredibly grateful to the South African government for the rigor of their science on the openness and the transparency with which they have rightly acted, as we did when we discovered a new variant here.

This new variant is highly concerning because it is yet more transmissible on.

It appears to have mutated further than the new variant has been discovered in the UK We've taken the following action.

First we are quarantining cases Andi, close contacts of cases found here in the UK Second, we're placing immediate restrictions on travel from South Africa and finally and most importantly, anyone in the UK who has bean in South Africa in the past fortnight.

And anyone who is a close contact of someone who's bean in South Africa in the last fortnight must quarantine immediately by quarantine.

I mean, they must restrict all contact with any other person whatsoever will be changing the law to give this legal effect imminently.

Now, these measures are temporary.

While we investigate further this new strain which is shortly to be analyzed at Porton Down on, I want to thank everyone involved for the seriousness with which I know that they will take these new instructions.