The Boston Strangler 1968
as Nat (uncredited)
The Winslow Boy 1958
as Ronnie Winslow
All Mine to Give 1957
as Robbie Eunson
The King and I 1956
as Louis Leonowens
The Eddy Duchin Story 1956
as Peter Duchin, Age 12
Her Twelve Men 1954
as Homer Curtis
Young Bess 1953
as Prince Edward / King Edward VI
Credits from TMDB.