By Alice Penwill & Mia O’Hare Coronation Street’s Calum Lill had an unexpected job before taking on the role of Joel Deering. The actor has starred in Waterloo Road, Hollyoaks and Holby City. He is currently wrapped up in an intense story line on the ITV soap, making it his biggest yet. Joel is set to come under fire as his girlfriend Dee-Dee Bailey, played by Channique Sterling-Brown, discovers he is hiding a big secret from her. “Joel has a wife, Emily, and a young daughter,” Calum said. “He’s going through a divorce but, legally, she’s not his ex-wife yet. Emily turns up out of the blue wan…