About 12 years ago, when I was flying to Detroit from London, we hit some turbulence. The plane started jumping around and the ‘fasten seatbelt’ sign came on. After about 20 minutes it stopped, and the flight attendants started serving food again. Then, the plane suddenly dropped – food went flying everywhere, there was a lot of screaming, and people started being sick. It went on like this for well over an hour. I sat rigid with fright in my seat, holding onto the armrests with both hands! Eventually the turbulence stopped and we could all relax again, but I know that I’ll never forget that flight.