A heat-health warning has been issued for south London ahead of a heatwave next week with temperatures expected to reach 30 degrees.

The Met Office has said it will start a consistent run of high temperatures over the next few days, meaning Britons could bask in an official heatwave.

South London is to see highs of 26 degrees on Saturday and 27 degrees on Sunday, but next week could see temperatures soar into the 30s.

The UK Health Security Agency (UKHSA) has issued a level 2 heat-health alert warning ahead of the heatwave.

The alert is in place from 9am on July 11 until 9am on July 15, and covers the East of England, South East and London regions.

The UK previously experienced a heatwave three weeks ago, with June 17 marking the hottest day of the year so far.

Greg Dewhurst, forecaster for the Met Office, said: “Over the course of this week, much of next week, temperatures are going to be above average and very warm locally, hot at times.”

He added: “Over the next few days, primarily the highest temperatures will be across southern and eastern parts of the UK. But I think as we go through the weekend and into next week, the heat is likely to be across pretty much the UK.”

Dr Agostinho Sousa, Head of Extreme Events and Health Protection at UKHSA, said: “We want everyone to enjoy the hot weather when it arrives, but also to check in on their vulnerable family, friends and neighbours to make sure they are prepared for the warm conditions ahead.

“High temperatures are predicted for a prolonged period, so make sure to follow our simple health advice to beat the heat, such as covering windows exposed to direct sunlight and making sure that fridges, freezers and fans are working properly.”

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