The Book of Mormon begins long before you step into the theatre. London is adorned with its posters, our offices echo with remembered jokes and songs. As you enter Leicester Square, you are bottlenecked towards the Prince of Wales – particularly if there’s a film premiere – and when you step up to the theatre, you are encircled by queues for entry and ticket collection alike. The atmosphere is spellbinding, and the weight of expectation is colossal. I’m delighted to say that my expectations were met.