Twelfth Night, Olivier, National Theatre, London, review: There's a touch of Mrs Danvers about Greig's devoted steward
Tamsin Grieg plays Malvolia, a traditionally male role, in Simon Godwin's new modern-dress production of Shakespeare's classic comedy of mistaken identity, joining the ranks of great actresses, who are tackling meaty Shakespearean roles, including Glenda Jackson as Lear