How many movies have Bernard Knowles and Hugh Williams collaborated on?

They have worked on 4 movies together! Their first movie together was White Face (1932) while their highest rated movie together was Rome Express (1932). They have not worked together since Secret Mission (1942). They are most known for their drama films together.

Crew
Director of Photography
Role
Major Peter Garnett
Crew
Director of Photography
Role
Michael Seeley