One lucky Briton bagged the £170 million EuroMillions jackpot to become the country's biggest ever winner. But Camelot, which runs the National Lottery and EuroMillions, has confirmed they are still waiting for the UK ticket-holder to claim the prize nearly 24 hours after the draw.
Simon Horne, Camelot spokesman, told the Mirror they "remain poised like coiled springs" for someone to come forward.
The player matched all five main numbers - 07, 10, 15, 44, 49 - and the two lucky stars - 03, 12 - in Tuesday's draw following the longest-ever series of rollovers.
Speaking last night, senior winners' adviser at The National Lottery Andy Carter said: "One incredibly lucky ticket-holder has scooped tonight's enormous £170 million EuroMillions jackpot.
The UK winner of last night’s £170 million EuroMillions jackpot has not yet come forward
"They are now the UK's biggest ever winner.
"Players all across the country are urged to check their tickets as soon as possible.
"It's been a fantastic year for UK EuroMillions players, with an amazing five jackpot wins.
"In June, one lucky ticket-holder, who chose to remain anonymous, became one of the UK's biggest ever winners after scooping a £123 million jackpot.
"As always, the team are on hand to support and help guide the new winner as they start their adventure with their life-changing win.
"Every EuroMillions ticket sold helps contribute to the more than £30 million raised every week for good causes by The National Lottery - funding everything from local community projects to supporting the nation's athletes."
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The £123 million winner in June has never revealed their identity and Camelot would not say whether it was an individual or a syndicate.
The previous biggest UK winners were Colin and Chris Weir, from Largs in North Ayrshire, Scotland, who scooped £161 million in July 2011.
And in August 2012, Adrian and Gillian Bayford, from Suffolk, won more than £148 million.
This year has been successful for Britons in the EuroMillions.
In the New Year's Day draw, Patrick and Frances Connolly, from Northern Ireland, won the £114.9 million EuroMillions jackpot.
Ade Goodchild landed a £71 million prize in March, while another anonymous ticket-holder bagged £35.2 million in April.