Did you know? Graham, who proudly stands on our doorstep, smartly dressed in red with a top hat, mastered "The Knowledge" - the world's toughest taxi test and was a London cabbie for over 20 years. How many famous people do you think Graham drove around old London town? . . . 📸 @the_mikeframe #doorman #britishhotels #knightsbridgehotel #hydeparkhotel #blackcab #knightsbridge #hotelentrance #londonhotels #mopeople #imafan #mandarinoriental #mohydepark