A sign advises people not to travel on the London Underground during the heatwave. EPA
People basking in the sun on a crowded Brighton beach. The temperature in Britain smashed through the 40ºC barrier for the first time in recorded history. PA
A man dives into the Serpentine Lake to cool off in Hyde Park, west London. AFP
Firefighters rest as they attend a gorse bush fire, near Zennor, Cornwall. Reuters
A tourist wears a hat to shield herself from the sun on Westminster Bridge in central London. AP
A man cools off at Trafalgar Square, central London. Reuters
Firefighters respond to a large wildfire in woodland at Lickey Hills Country Park on the edge of Birmingham. PA
A railway worker hands out bottles of water to passengers at London's King's Cross, where there are train cancellations due to the heat. AP
Firefighters control a grass fire in Ravenswood, Suffolk. PA
Train tracks are painted white to help with the heat at Alexandra Palace train station in London. PA
Deer rest in the shade at London's Richmond Park. Reuters
An empty freezer section at Sainsbury's Nine Elms in London. PA
Chippy the chimpanzee enjoys an ice treat at Blair Drummond Safari and Adventure Park, near Stirling. AP
A student dips her head into the fountain at Trafalgar Square, London. Getty Images
People turn out to watch the sunrise on Tuesday morning at Cullercoats Bay, North Tyneside. PA
A digital thermometer displaying a temperature of 39°C on a London Underground train. PA
A fan finds a way to keep cool while watching the Women's Euro 2022 football match between Italy and Belgium at Manchester City Academy Stadium. AP
An aerial view shows swimmers at Hathersage Swimming Pool, west of Sheffield in northern England. AFP
Traffic crosses a bridge at Woodhead Resevoir in West Yorkshire as water levels dip dangerously low. AP
A man leaps from the top of a tree into the River Cam, in Cambridge. Getty Images
A packed Gyllyngvase beach in Falmouth. Getty Images
A police officer gives water to a sentry in heavy ceremonial uniform, outside Buckingham Palace in central London. AP
A man cools off in a fountain in London. Reuters
A man sunbathes at the harbour in Mousehole, Cornwall. AP
People swim in the River Wye. Reuters
Passengers feel the heat on the London Underground. The operator advised its customers not to use the metro during the worst of the heatwave. AP
Palm House supervisor Will Spolestra waters the plants at the Royal Botanical Gardens Kew, west London, where temperatures inside the greenhouses are cooler than outside during the heatwave. PA
Dry grass at Greenwich Park, south-east London. AP
A swimmer takes an early morning dip in the cool water of Jesus Green Lido in Cambridge, eastern England. Getty Images
Assistant horticulturalist Katie Martyr checks the temperature at the Cambridge University Botanic Garden. Forecasts are for record temperatures exceeding 40°C. Getty Images
Bathers keep cool in a tidal pool at Perranporth Beach in Cornwall, south-west England. Reuters
Message boards at London's Victoria Station warn passengers of potential disruption to train services due to the extreme heat. AFP
Zorro the police horse drinks water from a bucket to cool down during hot weather, on Whitehall in London. Reuters
People use a map to shelter from the sun outside Buckingham Palace in London. Reuters
A cyclist rides through Richmond Park in south-west London at sunrise on Monday. Reuters
The reduced water level at Weir Wood reservoir, near Crawley, south-east England. The UK's Met Office has issued its first 'red warning' for exceptional heat. AFP
A crowded beach at Joss Bay in Broadstairs, south-east England. Reuters
Swimmers take the plunge to escape the heat in east London. Reuters
Sunbathers on the parched grass in Greenwich Park, south-east London. AP
A sign advises people not to travel on the London Underground during the heatwave. EPA
People basking in the sun on a crowded Brighton beach. The temperature in Britain smashed through the 40ºC barrier for the first time in recorded history. PA
A man dives into the Serpentine Lake to cool off in Hyde Park, west London. AFP
Firefighters rest as they attend a gorse bush fire, near Zennor, Cornwall. Reuters
A tourist wears a hat to shield herself from the sun on Westminster Bridge in central London. AP
A man cools off at Trafalgar Square, central London. Reuters
Firefighters respond to a large wildfire in woodland at Lickey Hills Country Park on the edge of Birmingham. PA
A railway worker hands out bottles of water to passengers at London's King's Cross, where there are train cancellations due to the heat. AP
Firefighters control a grass fire in Ravenswood, Suffolk. PA
Train tracks are painted white to help with the heat at Alexandra Palace train station in London. PA
Deer rest in the shade at London's Richmond Park. Reuters
An empty freezer section at Sainsbury's Nine Elms in London. PA
Chippy the chimpanzee enjoys an ice treat at Blair Drummond Safari and Adventure Park, near Stirling. AP
A student dips her head into the fountain at Trafalgar Square, London. Getty Images
People turn out to watch the sunrise on Tuesday morning at Cullercoats Bay, North Tyneside. PA
A digital thermometer displaying a temperature of 39°C on a London Underground train. PA
A fan finds a way to keep cool while watching the Women's Euro 2022 football match between Italy and Belgium at Manchester City Academy Stadium. AP
An aerial view shows swimmers at Hathersage Swimming Pool, west of Sheffield in northern England. AFP
Traffic crosses a bridge at Woodhead Resevoir in West Yorkshire as water levels dip dangerously low. AP
A man leaps from the top of a tree into the River Cam, in Cambridge. Getty Images
A packed Gyllyngvase beach in Falmouth. Getty Images
A police officer gives water to a sentry in heavy ceremonial uniform, outside Buckingham Palace in central London. AP
A man cools off in a fountain in London. Reuters
A man sunbathes at the harbour in Mousehole, Cornwall. AP
People swim in the River Wye. Reuters
Passengers feel the heat on the London Underground. The operator advised its customers not to use the metro during the worst of the heatwave. AP
Palm House supervisor Will Spolestra waters the plants at the Royal Botanical Gardens Kew, west London, where temperatures inside the greenhouses are cooler than outside during the heatwave. PA
Dry grass at Greenwich Park, south-east London. AP
A swimmer takes an early morning dip in the cool water of Jesus Green Lido in Cambridge, eastern England. Getty Images
Assistant horticulturalist Katie Martyr checks the temperature at the Cambridge University Botanic Garden. Forecasts are for record temperatures exceeding 40°C. Getty Images
Bathers keep cool in a tidal pool at Perranporth Beach in Cornwall, south-west England. Reuters
Message boards at London's Victoria Station warn passengers of potential disruption to train services due to the extreme heat. AFP
Zorro the police horse drinks water from a bucket to cool down during hot weather, on Whitehall in London. Reuters
People use a map to shelter from the sun outside Buckingham Palace in London. Reuters
A cyclist rides through Richmond Park in south-west London at sunrise on Monday. Reuters
The reduced water level at Weir Wood reservoir, near Crawley, south-east England. The UK's Met Office has issued its first 'red warning' for exceptional heat. AFP
A crowded beach at Joss Bay in Broadstairs, south-east England. Reuters
Swimmers take the plunge to escape the heat in east London. Reuters
Sunbathers on the parched grass in Greenwich Park, south-east London. AP
A sign advises people not to travel on the London Underground during the heatwave. EPA