Trevor Nunn has been gone from London’s National Theatre only a month, and he’s launched into a new career – directing Ibsen. “No longer having to explain his decisions, he seems unburdened and even unbuttoned in the usual – and successfully youthful – head-to-toe denim (he is 63). He had hoped to do the Ibsen, in a new version by Pam Gems, at the National. But it got endlessly postponed, so when the Almeida asked me it seemed the obvious choice.”