It is believed to be the UK’s biggest win by a teen.

Friends of the lucky lad told how he has hardly spent any on himself — but has given huge sums away since he scooped the jackpot.

One pal said: “He doesn’t need the money, he doesn’t really spend any. He’s a good lad. He’s given a lot to charity.”

His one splurge was jetting off to a £10,000-a-night hotel room while he considered what to do with the money.

The latest teen winner is the son of a businessman, according to reports, but has chosen to stay anonymous.

Lotto organisers Camelot refused to confirm any details of the winner because he declined publicity.

It is believed he landed the massive windfall last year during a streak of five Brit winners in a row, including 22-year-old Nottingham couple Matt and Cassey Topham.

The lad tops the rich list of previous teen winners including waitress Ianthe Fullagar, who scooped £7million aged 18 in 2008.

Britain’s youngest winner Callie Rogers was 16 and in foster care when she bagged £1.9million in 2003. She blew most of it on drink, drugs and a boob job.

Carroll frittered his fortune away on drugs and prostitutes. Eight years after hitting the jackpot he was asking to return to his job as a dustman.

But sensible Tracey Makin, who won £1million aged 16, invested the cash and now has an office job and modest car.