While he did not have a formal background in dance, he collaborated with Trevor Nunn, the director of the original production, and choreographer Wayne Sleep to develop the unique style of dance that became synonymous with *Cats*.
It's important to note that the choreography for *Cats* is largely based on the movements and gestures of real cats. Andrew Lloyd Webber and his collaborators observed cats carefully to capture their natural movements, using those observations to develop the unique and expressive choreography of the musical.