When I was last in London, I was unaware that "stage dooring" was a thing over there. I thought it was only a Broadway thing, but it surely is a thing in London. I cannot compare the difference as I have never done it in London before. I definitely will though when I go this summer.
The idea is to work and to experiment. Some things will be creatively successful, some things will succeed at the box office, and some things will only - which is the biggest only - teach you things that see the future. And they're probably as valuable as any of your successes. -Harold Prince