How many movies have A. E. Freudeman and Herman C. McNeile collaborated on?

They have worked on 8 movies together! Their first movie together was Bulldog Drummond Escapes (1937) while their highest rated movie together was Arrest Bulldog Drummond (1938). They have not worked together since Bulldog Drummond's Bride (1939). They are most known for their mystery films together.