How many movies have Lionel Jeffries and Terry-Thomas acted in together?

They have worked on 6 movies together! Their first movie together was Blue Murder at St. Trinian's (1957) and was their highest rated movie together. They have not worked together since Twelve Plus One (1969). They are most known for their comedy films together.

Role
Sir Charles Dillworthy
Role
Captain Sir Harry Washington-Smythe
Role
Det. Insp. Hook
Role
Capt. J. (Jeroboam) Barker-Rynde PI