Busted star Tom Fletcher is writing a sequel to his book about the Christmasaurus.

The Christmasaurus and the Winter Witch, illustrated by Shane Devries, takes place one year on from the events in the first book.

William Trundle is taken back to the North Pole where he meets the Winter Witch, whose power to control time allows Santa Claus to travel around the world every Christmas Eve.

The Christmasaurus and the Winter Witch will be published in hardback in October 2019.