Birdland Royal Court Theatre, londonGood PeopleNoël Coward Theatre, londonThe Donmar’s new production begins by breaking two conventions of theatre-going: first, the names of the title and writer are blacked out on the cover of the programme, and then there is a public warning that customers should switch their mobile phones on.Both tactics are thematic. The subjects of James Graham’s play are secrecy and (the redacted title-word) Privacy, with the dramatist suggesting that both concepts are now threatened, in personal and professional lives, by the fact that most people now carry around a telephone that is also likely to have a camera and a broadband connection.Graham’s previous plays – including the Lib-Lab pact bio-drama This House and the political satire