John Baker, 44, left the facility of HMP Springhill, an open prison near Grendon Underwood, without permission.

The incident took place at about 7pm on Saturday, May 23.

He is 5ft 9ins tall, of medium build, and has links to Northwood, near Watford.

Detective sergeant Jon Muldoon said: “We are appealing for the help of the public to trace John Baker, who is unlawfully at large after escaping from HMP Springhill.

“If you see Baker, do not approach him and call 999 instead.”

The Hawkstone Farmers’ Choir sailed into next week’s live final of BGT during the Saturday’s show.

Originally founded by Jeremy Clarkson to advertise his Cotswolds-based alcohol brand, the group is a collective of real British farmers.

Among them is James Florey, a fourth-generation farmer from Witney who supplies beef and lamb to Mr Clarkson’s The Farmer’s Dog pub in Asthall, near Burford.

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During Saturday’s live semi-final, Mr Cowell – who lives near to Mr Clarkson’s 1,000 acre Diddly Squat farm in Chipping Norton – took a joke swipe at his friend.

Praising the choir, Mr Cowell said: “I love what you stand for. It might be a bit annoying to see Jeremy Clarkson’s smug face is the only downside. Well done.”

The results were also live broadcast at Farm Fest, held in Warwickshire this weekend and fronted by the Clarkson’s Farm team.

After 14 weeks of auditions and live semi-finals, the remaining 10 finalists will go head-to-head one final time in the hope of impressing the judges – Simon Cowell, Amanda Holden, KSI, and Alesha Dixon – and the public.

Viewers will be able to vote for who they’d like to win the BGT final on the ITV website.

People are limited to five votes per registered mobile number per voting window.

Mr Clarkson has urged people to vote for the Hawkstone Farmers’ Choir, who won the golden buzzer during their audition from Amanda Holden.

At about 3.20pm on May 1, a crash took place on Purley Rise, Purley on Thames and involved a red Mazda 2 and a blue Toyota Yaris.

The driver of the Mazda remains in hospital with serious injuries.

No arrests have been made.

PC Jon Wildridge, of the Joint Operations Roads Policing Unit, said:

READ MORE: Person seriously injured on Westminster Way in Earley

“We are carrying out an investigation following the serious injury to the driver of the Mazda.

“I would like to speak to anyone who may have witnessed the collision or saw these vehicles in the area at this time to please come forward.

“Please check your dashcams to see if they captured anything around this time at this location.”

Anyone with information is asked to contact Thames Valley Police on 101, quoting reference number 43260214327.