Improvisation

 Mike Leigh is a man that has a unique style when producing films. He is most famous for improvisation, whereas other directors work is purely based as script work.  Mike Leigh has a different technique that may interest some actors and actresses. Mike Leigh  gets his cast together and he gives them a character that they need to work on, they have no script but get into the role of what character they will be in the film. 

Mike Leigh works with the characters while they are improvising until they get it wright, so until the true realism comes out they will film the scene. Mike Leigh may get a lot of criticism for not having a script as most directors do, however he wants to catch the true feeling of his characters.