If they don’t claim it, the money will go to charitable causes.
The winning raffle number is JRG437445 and was bought in May.
The Lord Mayor of Birmingham has mounted a countdown clock on a Range Rover, which is touring the area. A National Lottery spokesman said:
We’re desperate to find this mystery ticket-holder and unite them with their winnings. We have the champagne on ice and our fingers crossed that the lucky winner comes forward to claim their win.