This was a preview, so I imagine there will be a bit of tweaking before press night, but it hardly needs it. Simon Russell Beale who was so good as Timon last year is astonishing as the King, his authority, his voice and his body shrinking through the play as his madness takes hold. The direction by Sam Mendes is faultless although, like so many directors in the Olivier, he does love using that revolving stage a little too much – perhaps he will calm that down before it opens. All the acting was first class so it seems a bit unfair to pick anyone else out, although Olivia Vinall, who was so good as Desdemona in the NT’s Othello last year is a superb Cordelia. For someone still at the start of her career, that promises much to come. I won’t say any more as it would be unfair before press night but this really is unmissable.