An air ambulance was called to Ozzy Osbourne’s multi-million-pound country home as paramedics battled to save his life, MailOnline can reveal.

The Thames Valley air ambulance landed in a field close to Welders House, the singer’s Grade II listed mansion on Tuesday morning at around 10.30am.

It’s believed that calls from Welders House had led call handlers to believe that the Black Sabbath singer’s life was in the balance.

A chopper was dispatched from Thames Valley ambulance base at RAF Benson in Wallingford, Oxfordshire, some 27 miles from the mansion which is located close to the village of Chalfont St Giles, Buckinghamshire.

The crew were airborn for around 15 minutes before landing in the grounds of the mansion and were then with Ozzie for around two hours, trying but failing to save his life, it’s understood.

News of the helicopter drama is the first insight into the finer details of the singer’s d3ath.

It was announced by his family last night in a statement which read: ‘It is with more sadness than mere words can convey that we have to report that our beloved Ozzy Osbourne has passed away this morning. He was with his family and surrounded by love.’

Locals in the village of Jordans, which adjoins Osbourne’s home told MailOnline that they realised ‘something serious’ was taking place when they heard a helicopter hovering above Welders and then saw it land nearby.

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Air ambulance paramedics battled for around two hours to try and save Ozzy Osbourne

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Medics were called to Ozzy’s Welders House Buckinghamshire mansion on Tuesday morning

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A crew from the Thames Valley Air Ambulance was reportedly scrambled at about 10.30am

It was seen taking off again at around 12.30pm.

One resident, who did not wish to be named said: ‘I went out to have a look and saw that it was landing close to Ozzy’s house.

‘All of us were talking about it and wondering what had happened. We immediately feared it may be for him as he was known to be in fragile health.

‘When we heard later that night that he had di3d it confirmed our worst fears.’

A spokesperson for Thames Valley Air Ambulance confirmed to MailOnline: ‘We can confirm that our helicopter was dispatched to provide advanced critical care at an incident near Chalfont St Giles yesterday.’

Ozzy’s 125-year-old country pile is surrounded by a 350-acre estate which he and Sharon bought in the summer of 1993 for an undisclosed sum.

Ahead of his arrival in the UK for his farewell concert in Birmingham three weeks ago it had undergone a major refurbishment which included a dedicated rehab wing, swimming pool and pond so that he could spend more time there as his health deteriorated.

Another local, Jane, also saw the Air Ambulance.

She told MailOnline: ‘I was out walking when I saw the helicopter landing close to Welders and realised something serious was happening….

‘Ozzy Osbourne was quite a character and we’ll miss him.’

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Osbourne d3ath came just weeks after he performed at Black Sabbath’s reunion gig at Villa Park (pictured)

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Ozzy and Sharon Sharon Osbourne were  married for 43 years having wed in July 1982

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Heavy metal hellraiser Ozzy passed away at the Buckinghamshire mansion, pictured, where his wife Sharon had spent at least two years preparing for his final moments

The Thames Valley Air Ambulance service is based at RAF Benson in Wallingford, Oxfordshire and covers Berkshire, Buckinghamshire and Oxfordshire. It can reach any location within these three counties in a maximum of 15 minutes.

The Air Ambulance base is around 27 miles from the property with locals telling MailOnline that after seeing it land, they saw it take off again and fly over Jordans at around 12.30pm.

It only has one helicopter which is painted bright red and is routinely called out to provide critical care to patients in emergency situations. This can range from road traffic accidents to those who have suffered a heart attack or stroke.

Thames Valley Air Ambulance receives no government or NHS funding and relies entirely on donations and is a registered charity.

Earlier this week, it revealed that it had logged its 20,000th emergency call out since becoming an independent healthcare provider in 2018, which allows it to crew its aircraft with its own medical staff. This equates to an average of nine call outs per day.