20 St. James’s Square is a 69,605-square-foot, Class A office property comprised of three interconnected buildings: an historic 1774 section designed by architect Robert Adam, a 1930’s extension and a 1990’s addition. The Robert Adam-designed building is a Grade I listed structure, the highest level of landmark protection afforded.

Located in the heart of London’s West End, 20 St. James’s Square is in a prime location and benefits from close proximity to the Piccadilly and Green Park stations and the Jubilee, Bakerloo, Victoria and Piccadilly subway lines. St. James’s Square is one of the premier business locations in London.

The building is currently fully leased to Grand Metropolitan PLC, a wholly owned subsidiary of the Diageo Group until 2015. Diageo has in turn subleased space to a number of prominent international financial service firms.


The combination of an historic building and modern office space, as well as the property’s exceptional setting overlooking St. James’s Square, makes 20 St. James’s Square a strong addition to Pembroke’s London portfolio. We see significant long-term value in this property Our extended goal is to retain the historic fabric, character and detail of the historic building while seeking to adapt it to accommodate a more commercially attractive use, either separate from the main building, such as residential, or supportive, for example, as conference space.


If Pembroke were to redevelop the entire property around the historic Robert Adam-designed building, any work involving a listed historic landmark would require the utmost caution and care. We would consult with appropriate local officials and experts to help ensure we retain the historic fabric, character and detail of the historic building.


Any future development work on 20 St. James Square would revolve around the historic Robert Adam-designed building, which fronts St. James Square. Such a scheme would incorporate the latest state of the art environmental design and high performance specifications.