Fraser Bond are the leading lettings and property management agents for Ambika House - London W1B. Ambika House is a mixed-use building within the Harley Street Conservation Area, at the southern end of Portland Place in London W1. The main elevation facing Portland Place comprises basement, ground and eight upper floors. The rear section, which runs perpendicular to, and is connected to, the front building, comprises part basement, ground and five upper floors of office accommodation. The lower two floors across the front of the building were previously occupied for office purposes. The.