Actor Scott Speedman hates scripts because they make his job dull.

The UNDERWORLD star regularly edits his lines and stage directions in favour of an improvisational style.

He tells the New York Daily News, "I never follow what's in the script. I hate that kind of bulls**t, actor-y stuff.

"An actor that goes and reads the lines of the script and follows it like a map, it's really boring. It's TV stuff.

"Anyway, writers are ­doing that to sell the script, not so that you go and act 'sadistically'. I cross that stuff out. Sure, I do. You don't want it to get into your head."