Last year at Wimbledon, there was a man with a laptop at the very back of Court 1, who kept moving seats as people came in and claimed he was in their seat. I wondered how on earth he had got in in the first place if he had no seat, but perhaps it was just that his own seat was too conspicuous.

A man nearby went and fetched the security, who escorted him out.

D'you know, innocent me, I never thought of gamblers. I thought he was just somebody trying to post reports on a site like this!