Fraser Bond are the leading lettings and property management agents for Portcullis House - London SW1A. Portcullis House is an office building in Westminster, London SW1. A space audit of the whole parliamentary estate, carried out in the late 1980s by Michael Hopkins and Partners (MHP), revealed an urgent need for more than 200 offices for MPs and a new suite of select committee rooms. Earlier expansion schemes incorporated listed 19nth century buildings on Bridge Street and Victoria Embankment but after the passing of the London Underground Act it became clear that it would be necessary to clear.