A worker who was critically injured on the Sandringham Estate has spoken for the first time to thank the people who saved him.
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A worker on the royal Sandringham Estate in Norfolk is in a critical condition after being rescued from a lake.
Emergency services were called to the Lower Lake area just after 1.30pm on Monday afternoon.
Click below to watch a report by ITV News Anglia's Russell Hookey
Inspectors from the Health and Safety Executive (HSE) are at the scene of an incident at the Royal estate at Sandringham.
A spokesman for the HSE said:
– HSE spokesman
No formal investigation has been launched, but we do have inspectors at the scene with police who are making initial enquiries.
A spokesman for Norfolk Police said:
– Norfolk Police
"The man was retrieved from the water and was taken to Addenbrooke's Hospital by air ambulance for treatment. He is currently described as being in a critical condition.
"Police and the Health and Safety Executive are carrying out a joint investigation into the incident."
A worker on the Sandringham Royal estate is in a criticial condition at Addenbrooke's after being rescued from a lake.
The man, in his 30s, was rescued from Lower Lake and taken to the Cambridgeshire hospital by air ambulance. He is in a critical but stable condition.
Police and the Health and Safety Executive are carrying out a joint investigation into the incident.
Emergency services were called to the Norfolk retreat at about 1.30pm yesterday after reports that an estate worker, in his 30s, had fallen into the Lower Lake while operating a ride-on lawn mower.
It is understood the Queen was at Sandringham on a private visit less than an hour later.
A worker on the Sandringham Estate is in a critical condition after being rescued from a lake. Emergency services were called to the Lower Lake area just after 1.30 yesterday afternoon. The man, who's thought to be in his 30s, was on a ride-on lawn mower before falling into the lake.
Do you remember the giant jigsaw that suddenly collapsed last month scattering thousands of pieces everywhere? Well the 150 square feet masterpiece has been carefully reassembled at the Queen's Sandringham Estate in Norfolk where it's now gone on show.
A very nervous Natalie Gray watched as the last pieces were put in place.
A man who became an internet sensation when his giant royal jigsaw collapsed has finally got it to its resting place on the Sandringham Estate.
Dave Evans' first attempt completely fell apart in front of him.... and the cameras. He has now rebuilt it and it will go on show later this morning.
It's a case of second-time lucky for puzzle maker Dave Evans who is finally transporting his massive 150 square feet jigsaw to the Sandringham Estate in Norfolk - just weeks after it spectactularly collapsed.
Dave, from Weymouth spent more than 200 hours creating the giant record breaking wooden jigsaw as a tribute to the Queen's Jubilee. The video of the collapse has been viewed more than 112,000 times on YouTube.
You can watch the jigsaw's collapse on our website here
A massive jigsaw puzzle, destined to go on display at the Sandringham Estate, has collapsed.
Puzzle-maker Dave Evans had hand-crafted the 40,000 piece puzzle. The collapse of the 150 square ft puzzle was caught on CCTV.
He has seven days to put the whole thing back together again.
An exhibition of greetings cards received by The Queen during her Diamond Jubilee has gone on show at Sandringham this weekend.