English, created by National Theatre Wales and Quarantine, is a brainstorm about language and identity On either side of the stage, screens flash up words and phrases. "Accident of birth", reads one, then it's "accommodation", "adrift", "adversarial" and "afternoon tea". As we tick through "ah well" and "ancient woodlands", everyone in the room looks at the performer Jonny Cotsen, who is yomping around the space like…
