David Edgar’s new play, Testing the Echo, is a fascinating tapestry about the twisting road to becoming British.

Where did Father Christmas originate? How do you feel about men holding hands? What should you do if you spill someone’s drink?

Secretly, Tetyana wants to escape her marriage. Mahmood gets kidnapped for his own good. And the motley crew in Emma’s English class are all looking for something, whether it’s a passport – or a fight. As the day of their citizenship ceremony approaches, Emma’s students begin to challenge some of her dearest-held beliefs.