Taron Egerton’s Understudy Steps In After Star Faints During First Night Of His New Play, Cock
“A doctor who was in the audience attended to Taron immediately after the incident, and whilst he felt fine, it was decided that Taron’s understudy, Joel Harper-Jackson would continue in the role to complete the performance.”
Article source: https://www.huffingtonpost.co.uk/entry/taron-egerton-faints-cock-performance_uk_62246f4de4b02186be22a478