Coronation Street spoilers follow. A Coronation Street newcomer has weighed in on joining the ITV soap as part of a murder plot that hits close to home for Tim Metcalfe. "I still can't quite believe I get to say this, but I'm so grateful to be joining the cast of Coronation Street!" ITVRelated: Coronation Street reveals sad news for Will as his family rally round againHer co-stars, including Sally Metcalfe star Sally Dynevor, gave Dewin a warm welcome. Coronation Street airs on weeknights at 8.30pm on ITV1 and streams on ITVX.