The Council Room was originally the sitting room of 1 Carlton House Terrace's most eminent resident, George Nathaniel, Marquess Curzon of Kedleston. It has been restored to the interior designs of JP Gandy-Deering, which are designated preserved historic features. The room offers a large space of over 100 sq m and views onto The Mall, over St James's Park and the Houses of Parliament and Big Ben.

Theatre 110
Horseshoe/Boardroom 45 (with AV)
Boardroom 50 (with no AV)
Classroom/Cabaret 50
Dinner 80-90
Reception 120