Dejected Gordon Ramsay looks downcast as he returns home to London after being forced to pull out of gruelling Ironman triathlon in Hawaii

He expressed his disappointment online after he was forced to pull out of the gruelling race part-way through on Saturday.

And Gordon Ramsay's expression certainly mirrored his regret when he was pictured returning home to London from Hawaii where he had been competing in the Ironman World Championships triathlon.

Gordon, 48, looked evidently gutted that his attempt at the notoriously testing contest was cut short after he suffered a severe bout of dehydration which caused him to vomit during the cycling section, as he was spotted arriving at Heathrow Airport in London on Tuesday.

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Back on home soil: Gordon Ramsay cut a disappointed figure when he returned to London on Tuesday after being forced to pull out of the Ironman triathlon part-way through after suffering severe dehydration

Back on home soil: Gordon Ramsay cut a disappointed figure when he returned to London on Tuesday after being forced to pull out of the Ironman triathlon part-way through after suffering severe dehydration

The renowned chef appeared to have recovered from the episode as he managed to wheel his many amounts of luggage, which included his customised bike, through the terminal unassisted.

Gordon was dressed casually in a pair of navy tracksuit bottoms, a plain black V-neck T-shirt and a blue zip-up hoody.

He also sported a pair of black and white Asics running trainers and a matching adidas snapback hat.

Better luck next time: Gordon, 48, couldn't hide his regret as he slowly made his way through Heathrow Airport

Better luck next time: Gordon, 48, couldn't hide his regret as he slowly made his way through Heathrow Airport

Comfort over style: The renowned chef and avid fitness fan was dressed casually in a mis-matched tracksuit for the long-haul flight from Hawaii to London
Comfort over style: The renowned chef and avid fitness fan was dressed casually in a mis-matched tracksuit for the long-haul flight from Hawaii to London

Comfort over style: The renowned chef and avid fitness fan was dressed casually in a mis-matched tracksuit for the long-haul flight from Hawaii to London

I've arrived: Understandably, Gordon didn't appear too happy to have landed back home prematurely

I've arrived: Understandably, Gordon didn't appear too happy to have landed back home prematurely

Certainly not a light packer: The restaurant-owner was accompanied by a female assistant who wheeled a packed-out luggage trolley through the terminal

Certainly not a light packer: The restaurant-owner was accompanied by a female assistant who wheeled a packed-out luggage trolley through the terminal

His sighting came after he informed his online following about the unfortunate turn of events, which left him with no choice but to withdraw from the race part-way through, on Monday.

Gordon took to Facebook to reveal he was physically sick during the 112-mile bike ride section and could not go any further in the challenge as he was forced to seek medical attention because his 'body just shut down'.

He wrote: 'Hi guys, didn't happen this year. During my bike ride I threw up several times and wasn't able to keep anything down, making me dehydrated. I thought I'd be able to push through the marathon, but my body just shut down.

'Thank you to the medical staff who assisted me as well as to the Hawaii Police Department. Thanks again for all your support and a big congratulations to the all of this year's participants. I will be BACK! Gx.'

'Didn't happen this year': The father-of-four informed his Facebook followers of his failed attempt, explaining exactly why he wasn't able to continue

'Didn't happen this year': The father-of-four informed his Facebook followers of his failed attempt, explaining exactly why he wasn't able to continue

'Thanks again': The TV chef was sad to have not been able to complete the race, but wrote a shout-out to the Hawaii police dept. and the medical staff who assisted him 

'Thanks again': The TV chef was sad to have not been able to complete the race, but wrote a shout-out to the Hawaii police dept. and the medical staff who assisted him 

During Saturday's triathlon - which involved a 2.4-mile ocean swim, a 112-mile bike leg and a marathon run - Gordon documented the race on his page, before bowing out, and shared videos at various intervals to much encouragement from his fans.

In one video he said to camera: 'Right good morning, it's 6.20am here in Kona. The pros are just about to start seconds from now. Temperatures gone up [by] 88 degrees, very humid. 

'We're about to attack the 3.8k swim. Thanks so much for the support. Great Ormond Street, we love you. See you throughout the day. It's gonna be a long one. We love you, bye.'

Gordon completed the race, which is deemed 'the world's toughest' of its kind, in 2013 in an incredible time of 14 hours.

He has previously raced in 15 marathons, three ultra-marathons and three half-Ironmans (a triathlon ending in a half marathon).

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