Two fires that destroyed 19 homes in Stourbridge were started accidentally in fields where farming machinery was in use, according to West Midlands Fire Service.

Investigators established farming equipment was being used in the vicinity of fields immediately before the fires were first reported.

The first fire started in a field near Racecourse Lane at about 13:27 BST on 13 August, while a second began shortly afterwards in a field near Quarry Park Road.

The day after the fires the government sent out an emergency alert to millions of people across England and Wales, warning them against “any activity that could start a fire”.

Justifying why the alert had been sent, Prime Minister Andy Burham said: “I was in Stourbridge today and saw first-hand the devastating impact these fires have had on people’s homes and lives.”

West Midlands Chief Fire Officer Simon Tuhill said at the time the Stourbridge blaze was one of the most significant incidents the service had ever dealt with.

He said on Wednesday so many people had been affected he wanted to confirm both fires were not started deliberately. They were accidental, he said.

“While investigations continue into the full circumstances of what happened, we wanted to share this latest update as soon as possible,”Tuhill continued.

“I hope it will go some way towards helping people understand what happened on that exceptionally hot and challenging day.”

As well as the properties that were completely destroyed, a further 18 were damaged as the flames spread rapidly through grass and woodland.

The incident in Stourbridge happened on the UK’s hottest day of the year as temperatures peaked at 38.1C in some parts of the country, the Met Office said.

Several other fires were reported in the West Midlands on the same day as a total of 54 patients were treated by paramedics and 19 were taken to hospital.

Other incidents saw about a dozen homes lost in Birmingham, four in Stoke-on-Trent, three in Pershore, Worcestershire and three in Willenhall, near Wolverhampton.

The causes of most are still under investigation, although it was confirmed a barbecue started the one in Stoke on Trent.

Some residents were taken to Stourbridge Town Hall after the evacuation and given support by volunteers.

The Bishop of Dudley, the Right Reverend Martin Gorick, was among those who were forced to evacuate.

“We saw houses going up in smoke in front of our eyes. Absolutely tragic,” he said at the time.

“I know that many are still struggling to comprehend the scale of damage and personal loss,” Tuhill added.

“I’m also acutely aware that this information will not bring those back homes, livelihoods or cherished memories.

He added he was proud of the fire service response, plus that of colleagues in the police, ambulance and local farming community.

“The response to this incident showed the very best of Stourbridge and the wider West Midlands.”