Lottery operator Camelot says that the £64 million win would be the largest ever to go unclaimed.
Hertfordshire residents are being urged to check their pockets, cars and sofas for the missing ticket.
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Lily Allen claims she was called a tart and refused a lift by a black cab driver who told her to go and "find an immigrant".
The moment a lorry driver stopped traffic to let out the apparent migrants from the back of his vehicle was filmed by another driver