Had I filled out the questionnaire seven years ago, I would have been categorised as either "established middle class" or "new affluent" because back then I could afford to go to the theatre regularly and went to dinner at posh restaurants.

BBC: Class calculator: A US view of the class system

"I was sitting on the front row of the Donmar - literally the worst theatre space for it to go off, " she cringes.

BBC: Actors reveal worst stage interruptions