18 Wilton Row, Belgravia, London, SW1X 7NR
Come out of Hyde Park Corner tube and turn left down Knightsbridge. Look for sign on the left for Old Barrack Yard - it looks like a dodgy back alley. Turn left down this lane and then right when you see the sign for the Grosvenor Estate. This brings you on to Wilton Row and the pub is at the end of this alley.