The ticket matched all five numbers plus the two Lucky Stars. Last night's winning numbers were 3, 8, 26, 33 and 45.
The Lucky Star numbers were 7 and 10.
The jackpot win comes just three months after another UK ticketholder won a Â£121 million jackpot - becoming the country's third biggest ever lottery winner.
Andy Carter, from the National Lottery, said: "Players are urged to check their tickets and, rest assured, we have plenty of champagne on ice."