Scott Monello (alt Frankie Valli), Glenn Carter (Tommy Devito), Philip Bulcock (Nick Massi), Stephen Ashfield (Bob Gaudio), Suzy Bastone (Mary Delgado), Simon Adkins (Bob Crewe), Stuart Milligan (Gyp De Carlo), Jye Frasca (Joey), Joseph Prouse (Norm Waxman), Amy Pemberton (Lorraine), Laura Brydon (u/s Francine), Tommie Earl Jenkins (Hal Miller), Griffin Stevens (Hank Majewski)