A deadline for the winner of an unclaimed EuroMillions jackpot of £41million to come forward if their ticket has been lost or destroyed has passed.
The winning ticket-holder matched all five main numbers and two Lucky Star numbers in the EuroMillions draw on December 3 2019.
The winning numbers were 18, 31, 32, 38 and 48, with Lucky Stars 04 and 12.
The deadline for claims to be submitted, in writing, passed at 5pm on Thursday.
But a second deadline of midnight on Sunday 31 May, 2020 has been set.
National Lottery operator Camelot previously disclosed the winning ticket was bought in Dorset.
However, the operator is not revealing any further information in case the winner wishes to remain anonymous.
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Under its licence Camelot has the discretion to pay prizes in respect of lost, destroyed or stolen tickets.
Camelot will then determine whether the claim is valid, and would then pay the prize 180 days after the draw date.
National Lottery spokesman Patrick Lisoire said: "People are predisposed to checking the tickets they've bought but for whatever reason - the busy lives we lead, or the lead-up to Christmas - somebody hasn't quite got round to checking their tickets."