The football manager was crowned King Of The Jungle during Sunday night’s live final of the ITV reality series.
After winning, Harry said: “I’m amazed. I’m amazed I survived three weeks to be honest with you.
“When I first came in, I looked and I thought, ‘Oh my God, I’m in trouble here.’ I looked at the group and I thought, they don’t really know or are interested in anything I’m interested in. No sport and it was only Nick really who knew a little bit about football. I thought it’s going to be a hard couple of weeks but they just dragged me through it, every one of them.
“They’re the most lovely people I’ve ever met, the whole group. There wasn’t one person I could ever say one single bad word about. They were amazing. Without them, I would never have survived.”
Prior to the winning announcement, the final three took part in a series of Bushtucker Trials in order to win a slap-up meal in camp.
Emily had to endure having a bowl of insects placed over her head, prompting some hilarious reactions from host Holly.
John had to take on an eating trial where he was faced with five bush delicacies, which he had to choose to eat over some of his favourite meals.
Meanwhile, Harry had to lie in a tomb that filled up with creepy crawlies and rats.
All three of them won all the stars on offer, securing them a banquet to end their time in the jungle.
After John left the jungle in third place, he broke down in tears as he told Holly and Dec of his relief at being out of camp.
“It’s a bit of relief and it’s a bit of excitement. I can’t believe so many people voted for me. It’s just so amazing,” he said.
“It’s surreal, it’s amazing. It’s probably one of the best things I’ve done. I can count it in the top five of things I’ve done in my career. It was harder than I ever thought.”
Emily added of her experience: “I’ve learned I can survive in the jungle so i feel like I can do anything.
“This place has given me so much self acceptance… I’ve just learned to accept who I am.”
As the final ended, Dec thanked Holly, who filled in for his usual presenting partner Ant McPartlin this year, as he continues his break from the spotlight.
“Thank you, you have been amazing,” he said.
Holly said she had had “the time of my life”.