A few years ago I dropped my partner at Gatwick, and arranged to meet her on her return the following week. On that day I was also to meet my daughter at Stansted, and deposit my son at Heathrow, so not a day I was particularly relishing. Having successfully completed the Stansted and Heathrow missions, I arrived at Gatwick in good time. All seemed to be going well.
Her flight was slightly delayed, which meant that I had to go around the charged pick-up area a couple of times, before taking up residence in the short stay cp opposite the terminal. Eventually she phoned and said she was outside the terminal, and I told her that I was in the multi-storey car park opposite her. She said she couldn't see one, so I drove around the pick-up once more. No sign of her. I called again. She couldn't see me either.
'Which airport are you at', she asked. 'Gatwick', I replied.
'I'm at Luton', came the reply.
And so it came to pass that I visited 4 of London's 5 airports in one day.