Having won the Lottery jackpot and having received a cheque for more than £14million, he's been spotted fixing toilets just two days later because he doesn't want to let his loyal customers down.
The dad-of-two won £14,671,343 on July 2nd to be precise, but kept it quiet as he'd booked a holiday to Florida with his wife, Alison, and his kids.
The winning slip was kept safely under a lantern at home until they returned and got it verified.
He said: "I really enjoy my work - I've been doing it a long time. I want to stay grounded.
"I've got a lot of loyal customers and I don't want to let them down. I'm doing stuff that was arranged before all this happened."
John set up his own plumbing and heating engineering business in 1984 and says he couldn't imagine just sitting in the family home all day doing nothing.
"I'm just off up the road to service a boiler I fitted," he said. "My customers are older people and they've treated me just the same after the win which is what I want."
"I will treat myself once it's all settled down a bit. I'll probably slow down a wee bit, too."
Apparently the only reason the Doherty's got the winning ticket was because Alison allowed someone ahead of her in the queue at her local Nisa. That person then bought a Lucky Dip ticket and so Alison thought she might as well, too.
It was the winning fucking ticket, man.
The family celebrated by getting £45 worth of pizza from Domino's. Not bad.