Paul Merton is set to join Michael Ball in the upcoming West End revival of Hairspray at the London Coliseum, making his London musical debut.Merton will play Wilbur Turnblad, a joke shop owner whose daughter is vying for fame by entering a TV talent competition, and is married to Edna Turnblad, Ball's character.The musical opens on 23rd April, with casting also including Lizzie Bea and Marisha Wallace. Tickets are available now.Hairspray West End castPaul Merton joins Michael Ball, who...