The winning main EuroMillions numbers were 08, 10, 15, 30 and 42 and the Lucky Star numbers were 04 and 06.
Andy Carter, senior winners' adviser at the National Lottery, said: "On our 25th birthday, one very lucky ticket-holder has scooped tonight's entire £105 million EuroMillions jackpot.
"Players across the country are now urged to check their tickets to see if they have won big.
"Tonight's big winner has scooped the sixth EuroMillions jackpot banked in the UK this year."
Someone also became a millionaire by matching the Millionaire Maker code ZMSF62402.
A UK ticket-holder won a £170 million EuroMillions jackpot in October, making them the UK's biggest ever winner.
The previous biggest UK winners were Colin and Chris Weir, from Largs in North Ayrshire, Scotland, who won £161 million in July 2011.
A £123 million jackpot was won by a UK ticket-holder in June and a UK winner scooped £38 million in the EuroMillions in April.
Ade Goodchild, from Hereford, bagged £71 million on March 15 and Patrick and Frances Connolly, from Northern Ireland, won £114.9 million on New Year's Day.