Lottery chiefs are waiting for the UK ticket-holder who scooped a huge £37 million on the EuroMillions draw to come forward.
The prize won on Friday night is the 14th-largest jackpot win ever in the UK and the eighth big British EuroMillions triumph this year.
A National Lottery spokesman said: "This is amazing. Just a month after Adrian and Gillian Bayford scooped £148 million we have another UK ticket-holder banking the EuroMillions jackpot.
"It has been an extraordinary year for UK ticket-holders - this is the eighth EuroMillions jackpot to be won on these shores in 2012.
"This new jackpot winning ticket-holder now sits 14th on the exclusive National Lottery Rich List."
Adrian Bayford and wife Gillian, of Haverhill, Suffolk, won the second-largest jackpot yet in the UK after taking home £148 million last month.
In February Cassey Carrington and Matt Topham, both 22, of Stapleford, Nottinghamshire, scooped £45.1m.
Husband and wife Gareth and Catherine Bull from Mansfield won £40 million a month earlier.
A consortium of bus drivers from Corby, Northamptonshire, pocketed £38 million in March, while anonymous winners picked up £22.1 million that month and £46.4 million in February.
Friday's winning main EuroMillions numbers were 13, 15, 30, 35, and 42, and the Lucky Stars were 4 and 6. The winning ticket is worth £37,827,314.