How many movies have Derek Trigg and Julie Walters collaborated on?

They have worked on 6 movies together! Their first movie together was Killing Dad (Or How to Love Your Mother) (1989) while their highest rated movie together was Harry Potter and the Deathly Hallows: Part 2 (2011). They have not worked together since Film Stars Don't Die in Liverpool (2017). They are most known for their adventure films together.