I got three metres ahead of the singers while crossing the aircraft hangar space behind the stage and didn’t slow down as I banged through the first door, which cost a bruised rib but gained me at least a metre. My eyes had already begun to adjust, but even with the next emergency exit sign directly ahead there wasn’t enough light to stop me from tripping over a badly parked trolley. I went down clutching my shin, and an absurd part of my mind noting that an obstruction like that was a violation of health and safety regulations.

A silhouetted figure came charging down the corridor towards me. One of the singers had caught up; it was too dark to see which one. I kicked the trolley into his path and he went down on his face next to me. He was a big man, and smelled of sweat and stage make-up. He tried to get back up but I stepped on his back as I climbed to my feet. His friends banged through the door so I yelled to make sure their attention was focused on me, and then ran for it. The yelps as they tripped over their colleague were deeply satisfying.

Bang through another door and the lights were on, a separate circuit from the house lights, I guessed, and I was back in a blinding labyrinth of narrow corridors that all looked the same. I ran through a room inhabited by nothing but wigs and turned into a corridor whose floor was covered in drifts of ballet shoes. I slipped on one and went skidding into a breezeblock wall. Behind me I could hear the principal cast howling for my blood; the fact that the threats were beautifully articulated was of no comfort at all.

Finally, through another fire exit and I found myself by the ground-floor toilets next to the cloakroom. I could hear glass smashing from the direction of the main foyer, so I headed for the side exit by the ticket office. I ignored the slow, wheelchair-accessible revolving door and headed straight for the emergency exits, but what I saw through the glass brought me to a sudden stop.

There was a riot in Bow Street. A well-dressed mob was looting the hotel opposite, and a column of greasy black smoke was rising from a burning car. I recognised the make – it was a canary-yellow Mini convertible.

12 The Last Resort

The Last Resort

Nobody likes a riot except looters and journalists. The Metropolitan Police, being the go-ahead, dynamic modern police service that it is, has any number of contingency plans for dealing with civil disturbance, from farmers with truckloads of manure, to suburban anarchists on a weekend break and Saturday jihadists. What I suspect they didn’t have plans for was just over two thousand enraged opera lovers pouring out of the Royal Opera House and going on a mad rampage through Covent Garden.