A couple who won more than £1m on the lottery yesterday said they had to "backtrack" on a promise to buy their eight-year-old son a toy shop if their numbers came up.

A couple who won more than £1m on the lottery yesterday said they had to "backtrack" on a promise to buy their eight-year-old son a toy shop if their numbers came up.

Mark and Trina Myatt did not know they had won on the night because they were playing Who Wants To Be A Millionaire? with friends and did not realise they were real-life millionaires until the next day when they discovered they had won a £1,014,308 share of the £3m Hogmanay jackpot.

The first question the lucky couple had to answer after their win was from Mr Myatt's son Alexander who asked when he would get a toy shop.

Mr Myatt, 39, from Hemel Hempstead, Hertfordshire, said: "I had always promised my eldest son that I would buy him a toy shop of his own if we ever won the lottery.

"I did have to do a bit of backtracking this weekend although he has still done very well.

"He now has the Lego Star Wars Death Star set worth £300."

The couple's son Oliver, three, also joined the spending spree and chose a "huge" Thomas the Tank Engine train set.

"You can't move for toys in our house at the moment," added Mr Myatt.

The cautious couple ordered themselves a black Mercedes but said buying a brand new car would have been too extravagant even for a lottery winner.

"We have ordered one that's four months old. We both know the value of money. We did knock them down," said Mr Myatt.

"We get it tomorrow and I think the bloke in the dealership will strangle me."

Mrs Myatt, 38, who works as a financial controller with Atex Media Ltd, has played the same numbers - 3, 11, 15, 33, 36 and 45 - in every Wednesday and Saturday draw for around six years.

When she saw the winning numbers Mrs Myatt thought she had matched five but could not remember if her sixth number - her age at the time she chose the numbers - had been 32 or 33 so drove home to double-check.

"When I saw we had all six numbers I was just gobsmacked," she said.