Cambridge Circus is a former roundabout and now an intersection where Shaftesbury Avenue and Charing Cross Road meet. It is roughly halfway between Tottenham Court Road tube station and Leicester Square. This building a�� which sits on the junction across the road from the Palace theatre a�� is thought by literary scholar David Monaghan to be the site for the headquarters of John Le Carrea��s fictionalised British Intelligence service, known in his novels as the a�?Circusa��.

cam circus