National Lottery players are urged to check and double-check their tickets to claim this life-changing prize.
The search is now on to find the winning ticket owner who matched five main numbers and the Bonus Ball in the Lotto draw on August 31 in Bromley.
The winning Lotto numbers on that date were 2, 3, 29, 45, 48, 52 and the Bonus Ball was 54.
The lucky ticketholder has until February 27, 2025, to claim their prize.
Anyone not in possession of their ticket, for whatever reason, but who believes they have a genuine claim can still claim in writing to The National Lottery, but it must be within 30 days of the draw.
Andy Carter, senior winners’ advisor at The National Lottery, said: “If you bought a Lotto ticket in the London Borough of Bromley for the draw on August 31, it’s time to look everywhere – in the pockets of clothes you might have been wearing at the time, in bags, in the car, wallets and purses and in that sideboard or drawer where we all tend to put bits and pieces – and check your tickets.
“Do you live or work in this area, do you have family and friends there who you were visiting or were you just passing through?
“We’re desperate to find this mystery ticketholder and pay out their life-changing prize – imagine the possibilities for them
“We have the champagne on ice and our fingers crossed that the lucky winner comes forward to claim their win.”
If no-one comes forward with the winning ticket before the prize claim deadline, then the prize money, plus all the interest it has generated, will go to help National Lottery-funded projects across the UK.