On many of the occasions when a magician made a guest appearance on the show, host Cat Deeley would act as his assistant in one or more illusions. While these often involved her being either levitated, guillotined, impaled by spikes, crushed, stretched, or made to vanish, by far the most common was for her to be sawn in half, thirds or even quarters. On one of the occasions when she was sawn in half, Ant and Dec "stole" her halves and wheeled them off stage in opposite directions. On another occasion, she became the first British celebrity to take part in an illusion called Clearly Impossible, in which she was sawn in half inside a clear-sided box that gave an unobstructed view of her body all the way through the illusion.