Downstairs, the lobby still bustles with guests returning from shopping on Bond Street, bidding on lots at Christie's or listening to the nightingales sing in Berkeley Square.
Meanwhile, The Wall Street Journal reported last month that Christie's plans to offer at least 30 online-only art sales this year, up from just seven last year.
In the meantime, there's his nutritional company to run, and young athletes to mentor, not to mention another year of Street Athletics, the project he runs with his former coach Linford Christie to give young city kids the chance to try sprinting.