After the as-yet unnamed man came forward to collect his winnings, a National Lottery spokesman said:
"We're delighted Friday's ticket-holder has come forward to claim this amazing prize. This massive win ranks fourth biggest on the National Lottery Rich list and is the first EuroMillions jackpot to be won here in the UK so far this year."
The winner will be unveiled at Wotton House in Dorking this morning.
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The 20-year-old was found fatally wounded on Roth Walk, near Finsbury Park, north London at around 3am on Saturday, Scotland Yard said.
Police have arrested a man wanted in connection with a burglary at the home of pensioner Richard Osborn-Brooks.
The rally comes after it emerged that the Home Office destroyed thousands of landing cards documenting the arrival of windrush-era migrants