David Walliams answers your questions!

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Watch Ore's chat with David Walliams

David Walliams' latest children's book, Gangsta Granny, sees a 12-year-old boy team up with his gran to try and steal the crown jewels.

The British comedian has already racked up three best-sellers, and last month he took on a new challenge when he swam the length of the River Thames for charity.

It was all in aid of Sport Relief and he managed to complete the 140-mile journey in just eight days.

But Ore set him the ultimate challenge by asking him YOUR questions!

Watch the clips to find out what inspired his new book, how he coped swimming in the Thames and why he missed out on a part in the Harry Potter movies.