There is no doubt that Mrs Henderson Presents should transfer to the West End. The material is first-rate and superior to many new musicals that have played there in recent years. It will need a bigger orchestra (and, accordingly, bigger orchestrations) and it could do with some casting fine-tuning and a larger ensemble (another dozen dancers at least) so that a grander sense of scale was permitted. In Bath, it comes across as a superb chamber piece, perfectly suited to the gorgeous Theatre Royal. In the West End, its aim can be higher.