All the world's a stage: how theatre fell in love with itself
From Gypsy to Harlequinade and The Moderate Soprano, London's theatres are awash with shows about showbiz. Are they a valid celebration of the power of art, or just for self-indulgent luvvies? With the recent opening of Kenneth Branagh in Harlequinade and the impending arrival of a revival of Funny Girl with Sheridan Smith, there will be more than a dozen shows in London that are about showbiz itself.That's not inclu…