So, it turns out that going wrong isn’t always a bad thing. Who would have thought that a little play about a drama company trying to put on a play when everything that could go wrong does exactly that would become one of the most successful stage comedies around? But here we are. That little show that started its life in a pub theatre is now a huge hit. It’s about to celebrate its eighth birthday and has become the longest running show ever to play in London’s Duchess Theatr