UK's second heatwave sends ice cream sales soaring but comes with health warning

Temperatures in parts of Britain expected to reach 37°C

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  A woman shelters from the sun on Tower Bridge, in London. AP

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  A crowd of people watch the setting sun from a hill in Ealing, west London. AP

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  People enjoy the water fountains in King's Cross, London. EPA

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  The low water level at Pontsticill Reservoir near Merthyr Tydfil, Wales. Getty Images

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  Dry grass on the football pitches at Hackney Marshes in east London. PA

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  Aung-Bo, a 21-year-old Asian elephant, is cooled down by a keeper at Chester Zoo. Getty Images

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  People walk on parched grass of The Long Walk towards Windsor Castle. Reuters

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  A sunbather enjoys the warm weather in London. EPA

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  Tourists shelter from the sun as they stand outside Buckingham Palace in London. AP

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  People enjoy the hot weather as they zorb on the canal at Paddington Basin in London. PA

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  Horses from Hyde Park stables are surrounded by clouds of dust as they are ridden along a dry bridleway in the London park. Getty Images

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  The sun rises above the London skyline on Thursday morning. Reuters

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  London Fire Brigade dealing with the aftermath of a grass fire in Rainham, east London. PA

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  A water basin is cut off at Colliford Lake, where water levels have dropped to expose previously unseen trees at Cornwall's largest reservoir. AP

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  Men cool off by diving into the water at Cullercoats Bay in North Tyneside. AP

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  Scorched grass at Greenwich Park in London. AP

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  A dog cools off in a pond at Richmond Park in London. AP

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  Large areas of grass have turned yellow due to the dry conditions in Edinburgh. AP

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  A young man takes a dip in the Peover Eye, a small river that meanders through the Cheshire countryside. Getty Images

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  Dry fairways at Chelsfield Lakes club in Orpington have made for bouncy, unpredictable golfing conditions. Getty Images

The second heatwave to hit the UK this summer has brought with it a boom in ice cream sales, in which small businesses are struggling to meet demand.

But the surge in temperatures has also led to an “exceptional” risk of wildfires in parts of southern England and Wales, as well as a health warning for the vulnerable.

A spokeswoman for Mrs Dowsons Ice Cream said the company has been “really busy with orders”, which have doubled due to the heatwave.

Julia Lewis, of L Lewis ice cream company in Chester, said: “It’s just an escalation of getting busier, as people are running out of stocks and wanting more supply.

“They’ve come to the stage where they need replenishing quicker. There’s more stock going and there’s more orders.”

The Met Office’s Fire Severity Index, an assessment of how severe a fire could become, has been raised to level 5 – the highest level – for south-western parts of Britain, with the danger highest on Sunday.

Millions of people on Thursday awoke to the beginning of a four-day “extreme heat” warning, a period during which temperatures in parts of Britain will reach at least 37°C. Vulnerable people are at risk of adverse health effects, while the wider population may suffer from heat exhaustion, the Met Office said. There is also an increased risk of water and fire-related incidents during the hot spell, given that many people will flock to lakes, rivers and the seaside and light up barbecues.

Met Office meteorologist Marco Petagna said the chance of wildfires was high.

“The risk is very high across much of central, southern and eastern England,” he said.

“Going into Friday and the weekend, it starts to increase further, going into the highest category of exceptional risk.”

Satellite images of parts of the UK show the effects of hotter-than-normal conditions and minimal rainfall.

Parts of mainland Europe are suffering from drought, which has caused sections of major rivers to dry up.

Firefighters battle a blaze at a forest in the Gironde region of south-western France. EPA

More than 100 communities in France have run out of water, leaving desperate residents to rely on lorry deliveries. Wildfires are spreading fast across the country, with thousands of firefighters posted to battle the flames. About 8,000 people have been forced to abandon their homes.

The Rhine, which is vital to the German economy as it serves as an important shipping route, is close to running dry in sections. Low water has for weeks been delaying the transport of vessels carrying freight.

Severe drought in Spain has left the country’s reservoirs running at only 40 per cent capacity.

The UK’s Health Security Agency has issued an alert, with experts advising people to look out for the elderly, children and those with existing medical conditions as another unusually hot spell begins.

The second heatwave of the summer comes after temperatures in July smashed records as the mercury climbed to 40.3°C. The UK has endured the driest first seven months of the year in decades and hot spells have parched grassland and prompted hosepipe bans. Experts have also warned of risks to wildlife and agriculture.

Latest analysis from the UK Centre for Ecology and Hydrology (UKCEH) has issued a warning that low or exceptionally low river flows and groundwater levels are likely to continue for the next three months in southern England and Wales.

Mr Petagna said rain could fall early next week.

“There are signs that we could get some rain next week, but details at the moment are uncertain,” he said.

“What we really need is a few weeks of light rain to soak into the ground.

“Thunderstorms are more likely to cause some flooding issues — because the ground is hard, the water can’t sink in.”