Piccadilly & St James
St.James Park   9TG6AB1 Pall Mall Walk East (Soho) XFRRM71 Admiralty Arch (Soho) 7FCY6Y1 Harley St South (Marleybone) 8W0WD21 Cromwell Gardens East (Knightsbridge) YDRJJ21 U Buckingham Palace Entry (see interiors) RG8QOF1