One ticket-holder scooped a Lotto jackpot of more than £10 million in Saturday's National Lottery draw, Camelot said.
The winner matched the six numbers 42, 14, 02, 05, 55 and 51 to win £10,317,199.
A further two tickets matched five numbers and the bonus ball 54 to win £46,588, Camelot said.
The win comes after an unnamed UK ticket-holder staked a claim for a £51.8 million EuroMillions prize on Tuesday and just weeks after a British player was the sole winner of a £24.6 million jackpot.
In January, two Lotto ticket-holders broke a 21-year-old record, splitting a £66 million jackpot that was the result of 15 rollovers.
And in February a ticket-holder in Ireland claimed a 66 million euro (£50 million) share of the EuroMillions jackpot.
But the big prizes are some way from being the largest for a UK winner.
Colin and Chris Weir scooped £161,653,000 in July 2011. The cameraman and nurse, from Largs in Ayrshire, reportedly lavished a portion of their winnings on cars for friends, a mansion and a donation to the Scottish independence campaign.