Final day to claim EuroMillions lottery prize of £64m Published duration 5 December 2012

media caption Colin Rouse told BBC Radio Cornwall's Laurence Reed that he is ''ripping the house apart'' to find the missing ticket

The highest lottery prize ever to remain unclaimed - nearly £64m - will go to good causes if the winner does not come forward by 23:00 GMT.

The EuroMillions ticket for the 8 June draw was bought in the Stevenage and Hitchin area of Hertfordshire.

The missing ticket-holder matched all five numbers - 5, 11, 22, 34 and 40 - and the Lucky Star numbers - 9 and 11.

Shila Sachania, who runs a newsagents in Stevenage, said the £63.8m ticket is the talk of the town.

"People have been hunting high and low, searching in their cars and vans," she said.

media caption Andy Duncan of Camelot UK: "It's not too late"

"We had a customer, a lady customer you know, who she asked a friend or somebody, just to help her look in the house... and she said I'll give you some money for it."

The £63,837,543.60 jackpot is one of two winning tickets from the 8 June draw. The owner of the other ticket, from Belgium, has already come forward.

Anyone who believes they have the winning ticket for any of the draws within the 180-day deadline should call the National Lottery Line on 0845 910 0000.