The man, who is also a mechanic, will reveal his identity today when he takes part in a press conference organised by the National Lottery.
He is from Coulsdon, Surrey, and his ticket was the only one to hit the jackpot from Friday's draw, making him the National Lottery's fourth biggest winner.
After he came forward to collect his winnings, a National Lottery spokesman said: "This massive win ranks fourth biggest on the National Lottery Rich List and is the first EuroMillions jackpot to be won in the UK this year."
The winner will be unveiled at Wotton House in Dorking, Surrey.
The sum could help the winner buy his own Greek island, such as Omfori, being advertised for just over £41m, and a Lamborghini Veneno, one of the world's most expensive cars at a cost of £2.4m, and still have plenty left to spend.
Or he could splash most of the money in a single purchase to buy a 21-bedroom home in Mayfair, London, which is on the market for £90m.
Top of the National Lottery Rich List are Largs couple Colin and Chris Weir, who banked a £161 million EuroMillions jackpot in July 2011.
The second-biggest winners were Scots-born Gillian Bayford, who collected £148million with husband Adrian. However, the couple, from Haverhill, Suffolk, have since gone their separate ways. The Banfords won in 2012.
Friday's winning numbers were 6, 24, 25, 27 and 30, with the lucky star numbers 5 and 9.