Definitely not. Luther is a work of fiction. The creators crafted the story and its elements to provide viewers with an exciting and thrilling viewing experience that doesn't have a basis in reality.
I'm not sure specifically which 'Zack Butterfield' you are referring to. There could be many people with that name. It could be a personal story about someone named Zack Butterfield in a particular community, a family story, or something related to a specific event or achievement.