A single mother who scooped Britain's biggest ever lottery jackpot revealed yesterday how she told her teenage son: "I've had a wee win."

Angela Kelly, 40, who lives with 14-year-old John in East Kilbride, Scotland, won £35.4m in Friday's EuroMillions draw.

Her son has already drawn up a wish-list of presents - but wants to stay in their modest two-bedroom flat so he does not lose contact with his friends.

Mrs Kelly said yesterday she was still in shock at the win and was so ''flabbergasted'' she could not speak when she realised she had the winning ticket.

It was not until she returned to work on Monday that the postal worker discovered her Lucky Dip ticket had won.

Mrs Kelly revealed she at first refused to tell her son how much she had won when he called her at the office to find out when she would be home.

''I said to him 'I'll speak to you tonight, I've had a wee win on the lottery'", she said.

''But he phoned me back within ten minutes and asked me how much it was.''

John asked if it was £1m before his mother told the speechless teenager it was in fact more than £35m.

Mrs Kelly had already asked her colleagues at the Royal Mail sorting office in Glasgow to check the numbers because she could not believe she might have won.

''I couldn't even say anything, I just pushed my chair back and put my head between my knees, I was so flabbergasted,'' she told a press conference.

Mrs Kelly, who has been separated from her husband Gerry for eight years, has worked at the Glasgow Mail Centre since she was 16 and her annual salary there was £21,000.

She will now make more than that on interest from her win every week.

Mrs Kelly, who has a new partney, said she would be happy to give some of the money to her estranged husband, who worked with her at the sorting office.

But she said: ''I haven't even thought about that - I don't think Gerry has either. I think he'll leave that up to me.''

Last night, Mr Kelly said: ''I sincerely wish Angela all the best on her fantastic win. Now she won't have to worry about money for the rest of her life.''

Mrs Kelly revealed she was planning to move from her flat into a bigger house but would stay in the same area because her son liked it there and attended a local school.

''Fourteen is an important age for him," she said. "He has got to get his exams, and get a job.''

She said John had a long list of things he hoped she might buy for him, including a quad bike and a Nintendo Wii, and that he was given a Play Station 3 yesterday.

A pre-arranged holiday to Canada will go ahead and she is also planning to visit Hawaii.

She will also be buying a new Seat Ibiza to replace the car she crashed recently.

Since winning the jackpot, Mrs Kelly has already been given a glimpse of the new life that has opened up for her.

She said: ''I was taken by the girls from Camelot to some shops I have never been in before in my life, where you couldn't even afford a scarf.''

The winning £1.50 ticket came from Sainsbury's, in East Kilbride, but Mrs Kelly revealed she did not usually play the Euro Millions draw and could not even remember her winning numbers.

She said she had been brought up in East Kilbride as part of a ordinary family by her parents, who were both now dead.

''My father was a postman, my mother stayed at home looking after three girls,'' she said.

''It was just a normal working class upbringing.''