Confirming the news, Teddy Grimthorpe, racing manager to Prince Khalid Abdullah, in whose silks Eddery had some of his greatest days, said: “It is extremely sad news.

“Everyone at Juddmonte is very shocked and saddened by it.”

Eddery's achievements put him on record as one of the greatest jockeys of all time.

He won 14 British Classics, including three Derbys aboard Grundy (1975), Golden Fleece (1982) and Quest For Fame (1990).

However, his performance aboard Dancing Brave in the 1986 Prix de l’Arc de Triomphe is widely regarded as one of the most memorable of his career.

In one of the classiest fields ever assembled, Eddery made his challenge last, down the centre of the track, to snatch victory.

Remember some of the late Pat Eddery's finest moments in the saddle. A true great. https://t.co/7rRmiI6F38

— At The Races (@AtTheRaces) November 10, 2015

Other famous successes include those of Pebbles at the Breeders’ Cup, Silver Patriarch in the St Leger – which marked his 4,000th winner – and Zafonic in the 2000 Guineas.

Grimthorpe believes Eddery’s championship tally was testament to his abilities in a perceived golden era for jockeys.

“He spanned the greatest era for jockeys ever. Lester Piggott, Steve Cauthen, Willie Carson, all were exceptional yet Pat’s ability was unquestioned,” said Grimthorpe.

Eddery, who had been suffering from ill health of late, began a training career following his retirement, with the highlight being the victory of Hearts Of Fire in a Group One in France.

Bruce Raymond, a former weighing room colleague, described Eddery as a "fun guy" and "ultra competitive".

“It’s very sad. He’d been unwell for a long time. I just knew him as a good, fun guy. Everybody knows he was a great jockey,” said Raymond.

“We used to play cards and have lots of fun. I can’t imagine anyone being in his company and not enjoying it.

“I was with him abroad – Hong Kong, Italy, Germany, everywhere. We travelled together. He was good, fun guy and very generous.

“He was blooming tough to ride against and cool. He was ultra competitive. He would beat you in a photograph and laugh about it afterwards.”

Clive Brittain trained Pebbles and used Eddery when he was an up-and-coming apprentice.

“It’s a sorry day. He was a great friend and an integral part of my success at Carlburg,” said Brittain.

“He was at the top of the tree for so long, but he was a green kid when I first started using him.

“You always got 100% from Pat, be it in a Classic or a Brighton seller.

“I never used to discuss tactics with him really and I certainly didn’t with Pebbles. She was drawn 14 at the Breeders’ Cup and it was all people were talking about.

“Pat just said ’it’s a race, the best horse will win’ and she did. He never panicked and gave her a brilliant ride. He was just so confident in everything he did.

“He made so few mistakes, like Ryan Moore today, and that’s what sets the best apart from the others.

“He came to me as an apprentice on the advice of Frenchie Nicholson and he ended up riding my three biggest winners.”