BRITAIN'S top scientists are advising 'caution' as people head out to parks, beaches, and beer gardens today.

Today temperatures across Oxfordshire are set to hit at least 23C, bringing the warmest weather of the year so far.

Yesterday, people flocked to beaches across the country, leading scientists to urge caution as the number of new Covid-19 cases continues to rise.

The new spike in cases has been fuelled by the new Covid variant that was just identified in India.

Professor Susan Michie, professor of health psychology at University College London and a member of the Scientific Advisory Group for Emergencies (SAGE), told Sky News: "We're on a knife-edge.

"We could go either way with this new variant.

"Either it could run away as it did before Christmas, which would be extremely serious and we'd have to have more restrictions, or potentially it could be contained. But that does mean everybody needs to be cautious right now.

"Everybody's behaviour could potentially make the difference.

"So the key thing at the moment is for people to do their socialising outdoors, and if people are inside, make sure windows and doors are open."