The last time UK Lotto players had the chance of such a large jackpot was October 12, 2013, when one ticket matched all six numbers drawn to win £10 million.
Tonight's sizeable main prize may encourage a last minute buying spree that could push the jackpot even higher, and with 150 £20,000 raffle prizes also up for grabs it looks like being a big night for UK National Lottery players.