How many movies have Steven Kynman and Su Douglas acted in together?

They have worked on 3 movies together! Their first movie together was Fireman Sam: The Great Fire of Pontypandy (2010) while their highest rated movie together was Fireman Sam: Set for Action! (2018). They have not worked together since Fireman Sam: Set for Action! (2018). They are most known for their animation films together.