Calls are growing for a legal maximum working temperature as Buckinghamshire faces another spell of extreme heat.

Unions and climate campaigners are urging the Government to introduce new protections for workers, warning that rising temperatures are putting people at risk across a range of jobs.

The renewed pressure comes as the UK experiences its third heatwave of the summer, with campaigners claiming unsafe working conditions are becoming more common.

While recent demonstrations have taken place in cities including London and Brighton, campaigners say the issue is affecting workers nationwide – including those in sectors common across Buckinghamshire such as construction, hospitality and retail.

Moa Pårup, of the Heat Strike campaign, said: “Workers, older people and disabled people are under life-threatening pressure during extreme heat.

“We need to act together to make workplaces safer as these temperatures become more frequent.”

The campaign has been backed by several trade unions, including the Bakers, Food and Allied Workers Union and the Fire Brigades Union, and is calling for the UK to follow countries such as Spain and Belgium in setting a legal maximum working temperature.

Supporters say hundreds of people across the country have taken part in “Heat Strike” action in recent weeks, including setting up water stations, sharing safety advice and staging walkouts.

According to campaigners, extreme heat has already contributed to more than 1,000 excess deaths across Europe this summer.

However, business groups have previously warned that further regulation could place additional pressure on employers already facing rising costs.

Campaigners are now urging residents to contact their MPs and raise awareness locally, as temperatures continue to climb.