The National Lottery is hunting for the owner of winning Euromillions ticket who has not claimed their prize.
The £1 Million ticket was purchased in Worthing for the February 3 EuroMillions draw.
The ticket contains the winning code JWPG 51409 and the ticket-holder has until August 2, 2017 to claim their prize.
A lottery spokesperson said: “We’re urging everyone who bought a ticket in this area to check their old EuroMillions tickets again or look anywhere a missing ticket could be hiding.”
If you believe you have lost the winning ticket then you can still make a claim in writing to Camelot, but it must be within 30 days of the draw.
If the winner is not found the cash plus interest will go to help National Lottery-funded projects across the UK.
Andy Carter, senior winners’ advisor at The National Lottery said: “We’re desperate to find this mystery ticket-holder and unite them with their winnings, this amazing prize could really make a huge difference to somebody’s life.
“Thanks to EuroMillions Mega Week, £1million plus ‘a dip into paradise’ prize would certainly be an amazing introduction to the millionaire lifestyle.
“We’re urging everyone who bought a ticket in this area 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 the pockets of clothing, in wallets, bags and down the back of the sofa. We have the champagne on ice and our fingers crossed that the lucky winner comes forward to claim their win.”