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Jason Isaacs always looked after me very well. Alan Rickman, Michael Gambon, Helena Bonham Carter - they're all wonderful people and very helpful and inspiring. I bored Alan Rickman for hours about Robin Hood. It was one of my favorite films when I was younger and I asked how he did certain scenes. He was very patient and charming. It took me six years to work up the courage to ask him. Helena gave me advice about crying in a scene. She said tell your brain you're not allowed to cry and then it's more likely to happen. No one was difficult. You hear stories about actors who demand their coffee to be served at a certain temperature but on Harry Potter if you wanted a cup of tea you had to get it yourself.