Announcing this latest bump in the road on Instagram yesterday (March 23), the play's official channel wrote: "Taron Egerton has unfortunately tested positive for COVID.
"In accordance with the production's health & safety protocols, he will now isolate and we expect Taron to return to the show next week. The character of M will be played by Joel Harper-Jackson."
Wishing him well, theatre and movie fans alike flooded the comment section with messages of support.
"Healing vibes for @taron.egerton, thanks for keeping everyone safe! Break a leg @joelharperjacks!", "Get well soon @taron.egerton Sending lots of love to you" and "Everything will be alright, take care @taron.egerton. We love you endlessly," read three of them.
He's onboard as real-life video game designer Henk Rogers.
The information in this story is accurate as of the publication date. While we are attempting to keep our content as up-to-date as possible, the situation surrounding the coronavirus (COVID-19) pandemic continues to develop rapidly, so it's possible that some information and recommendations may have changed since publishing. For any concerns and latest advice, visit the World Health Organisation. If you're in the UK, the National Health Service can also provide useful information and support, while US readers can contact the Center for Disease Control and Prevention.