Leaving aside its puerility, and the fact that it might well exclude female colleagues, such behaviour is symptomatic of a great unspoken, and rather British, condition. Odds on, say experts, that many of those brokers and bankers - happy to collude in a testosterone-fuelled fantasy world - aren't actually having sex with anyone at all. Their lives, and the lives of their wives or partners, are just too busy for it. City hours allow no time for a personal life, so instead they fit sex into, and not around, work.