Ross has withdrawn for unknown reasons
Veteran film critic Barry Norman has replaced Jonathan Ross as John Travolta's interviewer for A Conversation with John Travolta, which as previously reported takes place at the Theatre Royal, Drury Lane on Sunday 16 February.
Norman, who was for many years the face of the BBC's film review programme, will talk to Travolta about his life and career.
It has not been confirmed why Ross has withdrawn.
According to press material, the evening presents a chance to "get up close and personal" with Travolta, star of Grease, Saturday Night Fever and Pulp Fiction among many other films.
A Conversation with John Travolta is produced by Really Useful Theatres Group with Rocco Buonvino & Joe Ricotta, who earlier this month produced An Audience with Sylvester Stallone at the London Palladium.
An Evening with Al Pacino took place at the Palladium last June.