The National Lottery good causes fund is 64 million pounds better off this morning, after a winning ticket holder from Hitchin or Stevenage failed to come forward by last night's deadline. The Euromillions jackpot is the biggest unclaimed lottery prize in history.
A multi-millionaire in Hertfordshire now has less than five hours to go until they lose all their money for good.
A Euro-Millions jackpot of almost £64 million is unclaimed and the winner must come forward by 11 o'clock tonight or the cash goes to good causes.
The ticket was bought in the Stevenage and Hitchin area in June.
More now from Elody Harper.
Lottery operator Camelot says that the £64 million win would be the largest ever to go unclaimed.
Hertfordshire residents are being urged to check their pockets, cars and sofas for the missing ticket.
Click here for the full interview.
A jackpot of £63,837,543.60 is waiting for the mystery winner who bought a ticket for the National Lottery Draw on Friday the 8th of June. They matched all five numbers - 5, 11, 22, 34 and 40 - and both Lucky Star numbers - 9 and 11.
If you think you've got that ticket, call the National Lottery Line on 0845 910 0000 by 23:00 tonight.
If you live in Hertfordshire then check down the back of the sofa, quick! Because you could be the mystery winner of a £64 million jackpot.
The National Lottery has been desperately searching for a missing millionaire for months, after a winning ticket was bought in, or around, Stevenage or Hitchin in June.
Now there are just hours to go until the ticket expires.
If the winner fails to come forward by 23:00 tonight, the money will go to charity.