A lottery winner in Swindon has been made a millionaire in the EuroMillions draw but has yet to come forward to claim the prize.
The lucky ticket was for the Millionaire Raffle on Friday, September 28.
Lottery bosses are searching for the winner and players being urged to check their stubs for a chance to strike it instantly rich.
For every EuroMillions line played, UK players automatically receive a EuroMillions Millionaire Raffle selection printed on their ticket.
The winning digits were ZLJ501773 and the ticket-holder has until March 27, 2013 to claim the prize.
If no one comes forward then the £1m will go to The National Lottery Good Causes – adding to the £28bn already raised through sales since the game launched in November 1994.
A spokeswoman for the National Lottery said: “We’re desperate to find the mystery ticket-holder and unite them with their winnings – this amazing prize could make a huge difference to somebody’s life.
“Being able to guarantee two UK millionaires every week with Millionaire Raffle is fantastic and we’re urging everyone to check their old EuroMillions tickets again or look anywhere a missing ticket could be hiding so that this prize can turn someone into the newest member of the lottery millionaire club.
“Try checking in pockets, in wallets, bags and down the sofa.
“We have the champagne on ice and our fingers crossed that the lucky winner comes forward to claim their win.”
To protect anonymity, the National Lottery does not give details of where tickets were bought where prizes have gone unclaimed, but seeks to jog people’s memories.
At the time will.i.am and The Script topped the UK singles charts with Hall Of Fame, while The Killers were top of the album charts with Battle Born.
The day after the draw, Swindon Town won 1-0 away at Shrewsbury Town.
And people may have visited the Swindon Arts Centre where The Phoenix Players presented the play Dead Guilty between September 26 and 29.
The draw creates two millionaires a week – one on Tuesday and one on Friday.
Past lottery winners in Swindon include Nicky Cusack, 46, who won £2.6m in 2009. She had breast cancer and said it was only the thought of returning to work at Asda which kept her going through her treatment. She later returned to her £6.30-an-hour job.
Anyone who believes they have the winning ticket should call 0845 910 0000.