record for the biggest win on a UK mobile slot jackpot has been broken, after a Galabingo.com player took £4.5m from one £4 spin.

Playtech announced the jackpot had been won via the provider’s software and that the victory is the largest ever on a Playtech network bingo site as well as being the second largest on a Playtech progressive jackpot game.

The winner, a female librarian from Glasgow who has been playing with Gala Bingo online for three years, has chosen to remain anonymous.

She said: “I picked up my mobile and started playing while I was watching TV. Minutes later I saw a huge string of numbers coming up and realised I’d hit the jackpot. I was simply blown away and couldn’t believe I’d won. It’s still sinking in and my family and I are still in a complete state of shock.”

It has not yet been decided how she will spend the money.