A MASSIVE £12.9million lottery jackpot has to be won tomorrow - and it could be nabbed by someone in Glasgow.

If no-one wins the massive sum it will rolldown to boost all the lower tier prizes.

To take home the Lotto Must Be Won draw, entrants need to match five of the six main numbers plus the bonus ball to win a guaranteed £1m.

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Andy Carter, the National Lottery’s senior winners’ adviser, said: “This is a Lotto draw National Lottery players won’t want to miss, with a must be won estimated £12.9M jackpot, whether it’s won with all six numbers or rolls down across all of the cash prize tiers boosting every winner’s prize!

“Lotto players help raise around £30M for National Lottery Good Causes each and every week. This supports projects big and small across the country, including funding everything from local community projects to protecting the nation’s heritage.”

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The jackpot prize could buy a 309-acre estate in Ayrshire which boasts 13 bedrooms, eight bathrooms and six living rooms along with a private library and a cinema within the main house.