FRANK McGuinness is renewing his relationship with Brecht. His version of The Caucasian Chalk Circle opens on Monday at the Royal National Theatre in London with a cast which features ex Commitmentette and actress of note, Bronagh Gallagher. The production is directed by Simon McBernie and is a National Theatre co production with the excellent and adventurous Theatre de Complicite (National Theatre of Ireland, take note).