There can be few superlatives left to describe Sarah Snook’s performance in Kip Williams’s London staging of Oscar Wilde’s The Picture of Dorian Gray – for the simple reason that she’s that good. Three days after I saw the play, at the Theatre Royal Haymarket, Snook was awarded the Olivier Award for best actress. According to the Guardian’s Lanre Bakare’s summation of the awards on 14 April, she was, from an impressive list, the sole ‘marquee name’ to do so. In her West End début, Snook gives a rockstar-like performance, one that exceeds expectations in a production where the stage is dominated by flamboyance and showmanship.