Jonathan Tapper, 51, appears on Gogglebox alongside his wife Nikki and their children Josh and Amy.
The reality star said hours sitting in front of the television filming the Channel 4 show was one of the reasons behind his weight gain.
And now Jonathan has dropped from 21st 3lbs to a much trimmer 18st 8lbs, via the musclefood.com Do The Unthinkable diet and exercise plan.
Jonathan revealed being diagnosed with Type 2 diabetes was his biggest motivation to lose weight.
The Gogglebox favourite said it wasn’t until his most recent blood test as part of his regular monitoring for diabetes when “alarm bells rang”.
He admitted: “I love food and love to eat so keeping the weight off has always been a struggle for me.
“I’ve lost weight a few times, through cutting out the rubbish in my diet and upping the exercise, but over the years the pounds have slowly crept back on.”
The dad-of-two revealed he first began to put on weight when he started his job as a chauffeur.
“I’d spend the bulk of my day sat behind the wheel getting no exercise.” he said.
As well as his day job, Jonathan said sitting down to watch TV for Gogglebox hasn’t helped his health.
Gogglebox 2019: Jonathan Tapper showed of his weight loss (Image: TOM CUBIS)
Gogglebox 2019:
