A super-slimming dad has managed to lose half his body weight after being shamed into shedding the pounds when he was too fat for an Alton Towers ride.

Blake Lewis, 33, who tipped the scales at 23 stone, was left mortified when he was told he was too big to ride the theme park attraction with his young daughter.

He had been visiting the Staffordshire theme park with his wife Laura, 35, and their children Sophie, five, and Toby, six, on May 29 last year.

But as Blake went to climb aboard the Go Jetters Vroomster Zoom roundabout-style ride in CBeebies Land he found the the safety bar wouldn't fit over his belly.

Blake Lewis and wife Laura Lewis, April 2011 in Tenerife.

The lardy dad-of-two was then left red-faced as he was then ordered off the ride for health and safety reasons leaving his daughter in tears.

The embarrassment led to Blake going on a diet and in just under 18 months, he lost an impressive 10 stone - dropping from a 40 inch waist size to 32.

Incredibly, Blake did not join any weight loss groups and managed to reach 12-and-a-half stone all by himself as a result of healthy eating and regular exercise.

Blake, a care assistant from Church Gresley, Derbyshire, said: "I had always wanted to lose weight ever since having children but never had the will power.

Blake Lewis, 33 of Derby, lost 10.5 stone after being unable to go on a ride at Alton Towers.

"I'd take my children to the park and play with them and thought I could probably run better than a lot of slim people.

"I did hear about some of my overweight friends getting diagnosed with heart disease and type 2 diabetes, but it was not fitting in the ride that did it for me.

"My daughter Sophie didn't understand why we couldn't go on the ride because we had sat down all right.

"I knew I was big but when I couldn't get the belt over my stomach I thought: 'This doesn't happen to people every day. Something is not right.'

"We were told to get off and Sophie was upset because she had to wait while her brother went on the ride with her mum. There were a few tears.

"There was no nastiness from anyone but from that point I said to myself: 'I can't let this happen again.'

Blake Lewis, 33, with his daughter Sophie Lewis, five

"I imagined other people in the queue were thinking 'Oh dear'. I probably would have thought the same.

"That's when I thought enough was enough and I needed to do something about my size."

Blake had piled on the pounds with his addiction to junk food and would often gorge on takeaways, burgers, fries or crisps.

But he reduced his food intake from up to five thousand to a thousand calories a day by cooking healthier meals and freezing them for the week.

Blake also started walking the one-and-a half mile journey to work and set up a homemade gym in his garage.

He added: "I saw myself as addicted to junk food, mainly savoury things like pies, burgers, fries, and crisps.

Blake Lewis, 33, of Derby, lost 10.5 stone after being unable to go on a ride at Alton Towers.

"Now if I see a pork pie I'm not bothered but before I thought: 'I've got to have it.'

"I could devour three to five thousand calories a day, sometimes more.

"But now I've gone cold turkey I don't get the cravings anymore.

"It's all about will power, being disciplined and cutting out the rubbish.

"Some of my friends and family say I'm an inspiration and a few colleagues at work who want to lose weight ask for advice.

"I tell them to do what I did and Google healthy foods and recipes. They key is meal prepping.

"Every Sunday I'd prepare healthy meals and freeze them or put them in the fridge.

"When I'd come home hungry I'd have one instead of burger and chips.

Blake Lewis, 33, with his daughter Sophie Lewis, five

"I did it completely by myself. I didn't go to Slimming World or Weight Watchers or anything like that.

"Stick at it hard for the first few weeks then you'll be encouraged when the pounds start coming off.

"I have a slim blend vanilla milkshake in the morning which replaces breakfast and lunch then lean meat with vegetables in the evening.

"I don't snack and I drink diet coke instead of a litre of full-fat stuff I used to.

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"I stopped driving to work and started walking. I run a bit and set up a gym in the garage. My family and friends were very pleased for me.

"Some were concerned that the weight dropped off so quickly that I'd make myself poorly.

"In fact, I've never been healthier."