Angela Dawes and her fiancé Dave yesterday celebrated winning Britain’s third biggest lottery jackpot, pledging to make millionaires out of 20 close friends and family.

But amid the popping of champagne corks, Steven Leeman, now 17, said he was not expecting charity from the 43-year-old, claiming she abandoned him as a young boy after beginning an affair with Mr Dawes.

He told The Sun: “As far as I’m concerned, I don’t have a mum.”

The boy’s father, John Leeman, said he and his son were left with £20,000 of debts after she ejected them from the family’s flat in Wisbech, Cambridgeshire.

He told the Daily Mail: “She’s talking about making 20 of her friends millionaires, but what about her son?”

Mr Leeman, a lorry driver from Wisbech, Cambridgeshire, added that they split after he came home one night to find his clothes thrown outside their flat in bags.

Steven does not expect to get a penny of his mum's EuroMillions jackpot, despite her pledge to make up to 20 of her friends and family millionaires.

The trainee joiner said: "I haven't spent time with my mum since 2006 and I don't even know where she lives.

"I came back from a school trip to France and my mum had kicked my dad out.  She packed my bags and told me if I didn’t like it I should go.”

"She wouldn't even give me my CDs, DVDs and computer. Since then, my dad has worked really hard to pay for us.

"I have never received a birthday, Christmas or Easter card from her since then, so I'm hardly likely to see a penny of her winnings."

The teenager and his dad live in the same Cambridgeshire town as Angela. Steven added: "When she passes me in the street, she completely ignores me." 

"If my mum wanted to see me now, I wouldn't see her. "

Steven's dad was married to Angela between 1994 and 2007.

John, 44, said: "People cannot believe that she dropped Steven like a hot potato. She ran off with this bloke while I was away working.

"I've been working 60 hour weeks to pay her bills. I've got a sofa with holes in it and she's walking around with £100million in her pocket."

"I don't care about her money. It makes my blood boil when I hear she is a really good person because she does stuff for charity." 

Mrs Dawes issued a statement last night saying she was “saddened” by her ex-husband’s claims.

She said: “A lot of what has been said since my divorce has been untrue and very hurtful.

“I’ve always wanted to be in contact with my son, who I love dearly, and very much still want to rebuild our relationship.”