How many movies have Christopher Lee and Joss Ackland acted in together?

They have worked on 7 movies together! Their first movie together was Rasputin: The Mad Monk (1966) while their highest rated movie together was The Three Musketeers (1973). They have not worked together since The Adventures of Young Indiana Jones: Adventures in the Secret Service (1999). They are most known for their adventure films together.

Role
Rochefort
Role
D'Artagnan's Father (archive footage) (uncredited)
Role
John Reid (segment 3 "Sweets to the Sweet")
Role
Neville Rogers (segment 2 "Waxworks")