Cheddar Reservoir is going to be shut to visitors during periods of hot weather due to a spike in anti-social behaviour.

The decision by Bristol Water comes after an increase in people swimming, drinking, littering and gathering at the lake, and will shut during periods of hot weather.

Steve Smith, head of recreations at Bristol Water, said: "I'm a huge advocate of walking in nature for our wellbeing, so this is not a decision taken lightly.

"We're sorry that the actions of a small minority are ruining it for the majority, but we cannot risk anyone losing their life."

"It might look inviting, especially at a time when holidays have been cancelled, but it's never safe to swim in reservoirs."

Cheddar Reservoir is currently open, but when the temperature increases to more than 23C, the path and car parks will be shut to visitors. It will reopen after spells of hot weather.

During periods of closure, car parks and gates will remain locked and security will be on site.

The reservoir is for drinking water. Reservoirs are complex machines designed to pull water in.

There's hidden machinery that cannot be seen from under the surface. The temperature can also be deceptive and induce cold water shock where your muscles freeze – preventing you from swimming.

There's also the risk of algae which is toxic to humans and furry friends, and weeds which can get tangled on your feet.