How many movies have Reverend W. Awdry and Sharon Miller collaborated on?

They have worked on 6 movies together! Their first movie together was Thomas & Friends: The Great Discovery - The Movie (2008) while their highest rated movie together was Thomas & Friends: Hero of the Rails - The Movie (2009). They have not worked together since Thomas & Friends: Blue Mountain Mystery - The Movie (2012). They are most known for their family films together.