The ticket-holder from the Cheshire area had 180 days to claim the prize but the deadline passed and nobody came forward to receive the windfall.
The punter had won the UK millionaire maker prize in a draw back on September 25.
National Lottery, senior winners' advisor, Andy Carter, said: "Unfortunately, I can confirm that the ticket-holder did not come forward within the deadline to claim their prize and has now sadly missed out on this substantial amount of money.
We tried very hard to find the ticket-holder and it’s a real shame that they have missed out, but there is still one winner – the nation."
"To avoid this unfortunate situation happening again, I would urge all National Lottery players to check their tickets on a regular basis.
"We tried very hard to find the ticket-holder and it’s a real shame that they have missed out, but there is still one winner – the nation.
"This money, and all the interest earned over the 180 days, will now go to benefit projects all over the UK funded by The National Lottery."
The unclaimed cash will now go to the Good Causes fund.
All players of the UK version of EuroMillions are automatically entered into the UK Millionaire Maker, which guarantees at least one lucky player will win £1 million in every draw.
The code consists of four letters and five numbers, with each code entered into a raffle where one is picked at random to win the prize.
You'll have a better chance of locating your ticket in Austria – where winners have three years to claim.
The odds of winning any EuroMillions prize are 1 in 13.
Source: Read Full Article