I love going to watch the world’s greatest tennis players battle it out on major occasions like Wimbledon and the US Open. I always look forward to visiting SW19, though usually fall foul of their rule-making. I had to borrow a tie a few years ago just to get into the Royal Box (since being knighted I am invited every year). As I’ve mentioned, as a rule I always avoid ties, but as I was Martina Navratilova’s guest on this occasion I had to tie the dreaded knot around my neck.