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Presented by Nick Knowles, The National Lottery: Guesstimation is a brand new fast-paced game show on ´óÏó´«Ã½ One that involves the whole family.

Each edition of Guestimation sees two families compete against each other to win a fantastic prize. In order to walk away as victors, contestants will have to outsmart their opponents by weighing up the options and deploying their skill and judgement to make the best possible guess at what the answer might be.

Over three exciting rounds, the teams will face a series of unusual, fun and occasionally head-spinning brain teasers. Each team's mission is simple: guess closest to the correct answer. And just to make things doubly tricky each thrilling round ends with a studio challenge performed by a special guest.

The family that guesses closest to the result of that challenge wins the round and earns themselves an all-important guess in the final. That's where the winning family will emerge triumphant and find themselves winning the trip of a lifetime.

The National Lottery: Guestimation showcases the Dream Number draw which raises funds for many of the venues that will be hosting events at the London 2012 Olympic and Paralympic Games.

Guesstimation – It's just a question of judgement.

Notes to Editors

The executive producer for Initial is Richard Hague and the series producer is Warren Prentice. It was commissioned by the ´óÏó´«Ã½'s Executive Editor of Entertainment Commissioning Alan Tyler.

The format was originally devised by the Dutch entertainment company Talpa Content, part of John de Mol's Talpa Media Group. Guesstimation first launched in The Netherlands where it was a ratings winner for leading family station RTL4.

KN

Information for viewers

More content about Guesstimation will be posted, as transmission approaches, on this page: