By Charlotte McIntyre Catherine Tyldesley was forced to step down from an appearance in a stage show. The Coronation Street actress is currently starring as Blanche Barrow in Bonnie & Clyde as she makes her professional musical theatre debut on its UK tour. However, the actress revealed she was heartbroken to miss the opening night in Woking as she admitted she needed to rest up after being struck down by a migraine. She wrote on Instagram: “Due to visually impaired migraine striking moments before curtain up I am gutted to not be performing tonight. But rest assured the incredible @oonagh111 …