The following people are credited as replacements or additions if they were not credited on opening night.

Press Representative: Jay Russell; Stunt Coordinator: Peter Hock; Assistant to the Producer: Margery Tseng.

Amy Burk	Sheila
Helena Carroll	Mrs. Gildea
George Connolly	Young Behan
Roslyn Dickens	Warder's Wife
Peter Hock	Borstal Priest
	Ken Jones a Borstal Boy
	Library Warder
Bob Horen	Cook
	Emigration Official
	Ensemble
	Minister
	Tubby Prisoner at Walton
	Voice of the Judge
Robert Horen	I.R.A. Man
David Matson	Emigration Official
	Ensemble
	Jock a Borstal Boy
	Library Warder
	Smith Prisoner at Walton
Dean Santoro	Mr. Whitbread First Warder
Richard Yanko	Detective Vereker
Richard Yesso	Cragg a Borstal Boy

Standbys: George Connolly (Young Behan), Terry Lomax (Young Behan), Kenneth McMillan (Brendan Behan).

Understudies: Amy Burk (Warder's Wife), Roslyn Dickens (Sheila), Peter Hock (Chewlips, Library Warder), Bob Horen (Callan, Cook, Joe, Library Warder, Minister, Mr. Holmes, Prison Governor, Tubby), John MacKay (Mr. Whitbread), David Matson (Borstal Priest, Cragg, Detective Vereker, James, Jock, Minister, Prison Chaplain), Tom Signorelli (Dale, Tom Meadows), Richard Yesso (Joe).