A 57-year-old admin assistant recently scooped the £17,500 Afternoon Delight UK bingo jackpot.
But thanks to an agreement she had made previously, her mother is to take a slice of the profits.
Meanwhile, the winner tells the game's operating body, National Bingo, that her son also stands to gain from the prize money.
"I'm very shocked and won't really believe it until I have the cheque in my hand - but it's a nice time of year to win," she adds.
Her win came at the Gala Bingo club in Surrey Quays Leisure Park, London, where she has been a member for about six years.
This is not the first time a UK bingo jackpot has been split three ways, National Bingo reveals.
A recent £100,000 sum was shared by the winner with her brother and her father, whose idea it was to play.
Written by Bob Bardsley.
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