This article covers a real-world subject which should not be taken as part of the Holby universe.
"The Sunny Side of the Street - Part One" is the 558th episode of Casualty and the 17th episode of the 21st series.
Synopsis[]
As the staff try to come to terms with the aftermath of Josh's actions, an accident involving a vanload of prisoners and a crowd of residents protesting against a brothel ensures the staff have their hands full.