A spokesperson confirmed to the News last week that the winning ticket was bought in the borough, and despite last week’s appeal the prize has yet to be claimed.
Players in Southwark are being urged to double-check if their codes match JMDB 77565 – while it is valid for 180 days, until April 23 2017.
Anyone who has any queries or who believes they have the winning ticket, call the National Lottery Line on 0844 338 7551 or email help@national-lottery.co.uk.