Amadou Gillen of Towbridge, Wiltshire won the jackpot on a scratchcard he bought during his break at Spoons, but returned to finish his shift in the kitchen.
He said: "It was certainly a long shift that day. I didn't finish until 11.30pm or 12 that night, so had to work for almost four hours knowing I had won.
"I don't know how I did it."
Gillen said he was unable to celebrate when he first thought he had won, not until the money was in his bank account.
But eventually he ‘screaming and shaking’ after celebrating with his daughter.
The former JDW worker is not after a flashy car after winning his millions, opting for a more modest Peugeot, while he also plans to pay for his daughter’s university education with the winnings.
He continued: "When I saw the number '4' on the card I knew they didn't pay out £40, so I knew it had to be £4million.
"I scratched off the rest and oh my, I was so excited.
"But I put the card back in my pocket, and went back to finish the rest of my shift.
"Hopefully I'll get a small Peugeot and after that and driving for a while and getting experience of driving I'm going to get my dream car, which is a BMW X6.
“The win is a life-changer for me. I can now tick all the boxes of everything I’ve ever wanted to do – learn to drive and get a car, own a house, go on holiday and help pay for my daughter’s University education in the UK."
"People say when they win the lottery they will feel like this, or that, but when you do, you feel different.
"I wanted to celebrate, but I couldn't. It was a feeling I can't express."
"I was really excited, I was screaming and shouting.
"I managed to keep it quiet until everything was sorted out."
"My daughter was shocked, she was shaking and said 'is it real?'"