Police were called to EuroMillions winner Adrian Bayford’s mansion after his 13-year-old son was in an accident

The teenage son of EuroMillions jackpot winner Adrian Bayford has been released from an artificial coma after a quad bike accident that left him fighting for his life.

Cameron, 13, was riding the powerful machine when it was reportedly involved in a collision with a car driven by his 15-year-old sister Aimee.

The pair were roaming the 148-acre Cambridgeshire estate that Adrian bought in 2012 with his mega profits when the incident happened.

Family friends said Cameron is in an intensive care unit at Addenbrookes Hospital in Cambridge but is responding well to treatment.

Bayford and his ex-wife Gillian have stayed by their son’s bedside while he recovers.

A family friend said, “This is the best news the family could have hoped for. Doctors have brought him out of an artificial coma, but there is still a long way to go.”

It came after a Cambridgeshire Police spokesman confirmed that officers visited the accident site at Mr Bayford’s estate around 3pm on Monday 23 August.

“EMS staff clearly thought this was something for the police to investigate, and they called them,” a police source said.

Friends said the former postman – who shared a £148 million jackpot with ex-wife Gillian – would blame himself for the tragic accident involving his son.

The employee said, “Adrian is just consumed with guilt. He keeps thinking “what if”.

“He let his son and daughter drive those vehicles around the estate. His daughter is too young to drive on public roads, but like a private estate, she didn’t need a driver’s license.

“The children were wary of being with him while their mother was in Scotland.

“The quad was bought by Adrian so he could move around the estate. It was one of the “boy toys” he bought after his big win.

The 13-year-old son of Euromillions winner Adrian and ex-wife Gillian Bayford is said to have been hit by a car driven by his 15-year-old sister.

At the time of their win, Gillian and Adrian were the biggest British lottery winners ever

At the time of their win, Gillian and Adrian were the biggest British lottery winners ever

Emergency services and an air ambulance were called to the 148-acre Cambridgeshire estate (pictured) after the teen's sister raised the alarm

Emergency services and an air ambulance were called to the 148-acre Cambridgeshire estate (pictured) after the teen’s sister raised the alarm

“It’s way too powerful for a young lad to drive. I know he regrets going out.’

Adrian and his former wife Gillian, 48, have been on a night watch at Addenbrooke’s Hospital in Cambridge, where the teen is in intensive care.

He was thrown off the quad bike into a fence after being hit by the car driven by his older sister.

Although she is too young to have a driver’s license, the police will not take any action as the accident took place on private property.

An air ambulance was called to the remote estate near the village of Haverhill, Suffolk, but the teenager was instead transported by road to hospital.

Bayford, 49, and his children had returned to the £6.5m mansion to spend part of the summer holiday on the sprawling estate, according to a former farm worker.

It is believed that both the quad (pictured) and the car were bought by Adrian for the kids with his share of the £148 million jackpot he won with Gillian in 2012.

After the win, Adrian put on the grounds of his home at the Cambridge Rock Festival

After the win, Adrian put on the grounds of his home at the Cambridge Rock Festival

The property has been up for sale for the past three years and Adrian has moved to Scotland to be closer to his family.

A friend said, “I’m surprised he’s still here. We all thought he had given up the place and settled in Scotland.

‘I really feel for him. He hasn’t had any luck since he won all that money. His marriage broke down, all his relationships have come to an end, and he hasn’t been able to get out of the house.

“I can’t say that all that money really brought him happiness, and then this happens.”

There was no answer at the house yesterday, but three cars, including a Ford Mustang and Range Rover, were parked outside the mansion built in 1815 for former racehorse owner Stanlake Batson.

Bayford and his wife became the biggest British lottery winners ever when they hit the £148 million jackpot nine years ago.

Within a year their marriage ended and Gilliam moved back to Scotland with her half share of the profits, where she started a real estate company.

She has since remarried and at the age of 48 had her third child with her second husband.

Bayford remained in the Grade II listed building, but after a string of relationships failed, he put it up for sale and moved north to be closer to his children.

The lottery winner had to step up security at the vacant property last year after squatters used his swimming pool.

A sign at the main entrance warns visitors that there are guard dogs on the ground and CCTV cameras are monitoring the site.

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