It’s a well-known saying that time is money, and now we know how much for business travellers. Research by London City Airport [LCY] has found that the average person travelling through the airport values one hour of their time at £189.25. That’s roughly the price of a return flight to Paris, dinner for two with drinks at "The Ritz", a round of golf at Gleneagles, or a Vivienne Westwood watch. Almost 30 p...