The theatre preview is an odd beast. “Like so much, good and bad, in British culture, the preview is essentially an American import. The American theatre economy can sustain this lengthy period of what is effectively public rehearsal because it has a huge subscriber base. But why on earth should audiences be asked to watch something which in some sense is not deemed ready for public consumption? At best, they run the risk of being short-changed, especially if preview tickets are charged at the same price as those after the official opening.”