Red warning: Britain braces for extreme record-breaking temps

People across Britain are bracing for what's expected to be record-breaking temperatures of up to 40 degrees Celsius (104 degrees Fahrenheit) this week.

A member of the Queen's Guard receives water to drink during the hot weather, outside Buckingham Palace in London, Britain, July 18, 2022.

The Met Office on July 15 issued its first-ever "red" heat warning for the week as temperatures across Britain were expected to spike starting on July 18.

People gather during hot weather on Perranporth Beach in Cornwall, Britain, July 18, 2022.

A police horse drinks from a bucket during a hot day in London, Britain, 18 July 2022.

Children play in a fountain in Trafalgar Square in London, Britain, 18 July 2022.

Britain's Prince Charles, Prince of Wales, wearing sunglasses, and Britain's Camilla, Duchess of Cornwall, sheltering from the sun beneath an umbrella, react during their visit to Newlyn Harbour and fishing port near Penzance in southwest England, July 18, 2022.

People enjoy the hot weather on the River Cam in Cambridge, Britain, July 18, 2022.

People swim in the Sky Pool at Embassy Gardens during a heat wave in London, Britain, July 17, 2022.

A woman shields herself with an umbrella during a heat wave, in London, Britain, July 18, 2022.

An aerial view shows people swimming outside in the sun at Hathersage Swimming Pool, west of Sheffield in northern England on July 18, 2022, during an extreme heat wave.

A drop of sweat runs down the face of a Household Guard during a hot day in London, Britain, July 18, 2022.

A man cools off in a fountain during the hot weather in London, Britain, July 18, 2022.

People shelter from the sun underneath a map during the hot weather, outside Buckingham Palace in London, Britain, July 18, 2022.

People swim in the River Wye during a heat wave in Britain, July 18, 2022.

People sit on a bench on the cliff top during hot weather at Perranporth Beach in Cornwall, Britain, July 18, 2022.