“We did have rehearsal time at the BBC and we did have access to material out of Japan (Hiroshima and Nagasaki), which hadn't really been accessed at the time by people in the Western world, so literature that was grim, seriously grim. And I know there were times when I used to come home on the bus after rehearsal and having sort of steeped myself in this research where I wanted to shout out to everybody on the bus "do you know? Do you know what this is about? What could happen to us?". It gets into your bones a bit when you are working that closely with things.”