In pictures: Hot weather sweeps across UK

Photographs from the day when high temperatures are forecast across the UK, with London set to be one of the hottest places in the world.

The Sun rises in Mevagissey Harbour, in Cornwall, on the day UK temperatures could hit 41C.

Nearby, fishermen are out to land an early catch.

In Penzance, Cornwall, swimmers took to the water just after sunrise.

A homeowner covers the front windows to try to keep out the sunshine.

A country path in Dunsden, Oxfordshire, is dry and cracked because of the lack of rain in the recent hot spell.

A newborn Bolivian squirrel monkey keeps cool at Chessington Zoo, in Surrey.

At the Royal Botanic Gardens, Kew, in south-west London, horticulture student Muhammed Ismail Moosa waters the plants in the Palm House.

Paddleboarders make the most of the cooler morning, in Bristol.

Police horse Zorro drinks water from a bucket on Whitehall, in central London.

Joanne Dunwell and her eight-month-old daughter stay cool in the ponds in Holyrood Park, Edinburgh.

A soldier of the Queen's Guard is given drinking water outside Buckingham Palace, in central London.

A woman keeps cool by dipping her feet in the River Thames near Chertsey, in Surrey.

Visitors to Cambridge take to the River Cam.

Jasmine Bowers with her daughter, who is eating a lollipop outside their home in north Belfast.

Assistant horticulturist Katie Martyr checks the readings for the previous 24 hours on Monday morning at the Cambridge University Botanic Garden, which previously recorded the UK's highest temperature of 38.7C (101F ) in July 2019.

Elsewhere at the Cambridge University Botanic Garden, beekeepers check on the beehives. They add extra water pots and place cardboard on top of the hives to help mitigate the impact of extreme heat.

People swim in the tidal pool at Perranporth Beach in Cornwall.

A woman keeps cool beside a water sprinkler outside Queen Elizabeth II Centre in central London.

People sit in a children's paddling pool which was filled by a council parks vehicle in central London.

A man walks in the sun in Greenwich Park on what is already the hottest day of the year across the UK.

How are you helping your pet stay cool during the heatwave? Please send us your tips and photos: Upload your pictures/video here

Please include a contact number if you are willing to speak to a BBC journalist. You can also get in touch in the following ways: