A mother and son bought an extra Lucky Dip ticket to last Saturday's National Lottery draw and won £7.5 million.
Doreen Hay and John Hay, both from Teesside, discovered their win the following morning when Doreen, 70, checked the numbers in her Sunday newspapers and phoned her son with the happy news.
The 38-year-old jumped in his car straight away and drove from Billingham to his mother's house in Thornaby after she told him: "John, you'll have to come over, I think we've won the Lottery."
I checked the numbers three times. I couldn't believe it so I sat down and then checked again. It was then I realised we'd won £7.5 million
The cable engineer contacted the National Lottery to confirm the £7,505,717 win before breaking the happy news to his partner Susan Robinson, 39, a customer services representative.
The couple, who are renting and have not been on holiday for seven years, are now planning to buy a dream home and take a trip to Disneyland, Florida.
At a news conference in Darlington, John told reporters he would "definitely" be giving up work.
His mother intends to move from her upstairs flat into a bungalow, treat her three grandchildren, seven brothers and sisters, and her ex-husband.
Doreen told of how she had previously cut down on her lottery tickets when the price went up but decided to throw caution to the wind last week and bought an additional ticket.
Describing the moment she saw all six numbers matched, she said: "I've got scratches on my wrist, I pinched my wrist, I thought 'Am I still dreaming?'"
The retiree has previously won £1,000 on National Lottery with five numbers and claimed: "I always said I'd get the six."
Doreen and John Hay's winning numbers:
22, 23, 25, 27, 28 & 46
Watch Doreen Hay and her son John describe the moment they realised they had become multi-millionaires:
The region has recently experienced a flurry of lottery windfalls.
On New Year's Eve, a syndicate from Teesside-based Sahaviriya Steel Industries (SSI) shared £1 million on the EuroMillions UK Millionaire Raffle draw. That followed another syndicate at the same steel works netting almost £300,000 on the EuroMillions three months earlier.