Originally constructed in the late eighteenth century as the Middlesex Sessions House for the magistrates’ court, this old Georgian court building is one of the finest and most important historic buildings in Clerkenwell, and during its heyday was notorious for handing down harsh sentences within its jurisdiction. Since the end of court activities in the 1920s and following various users and rather unsympathetic alterations, which included the loss of the original Georgian court room, Feilden+Mawson oversaw an extensive refurbishment project to recover some of the old qualities lost while introducing well considered additions. The project included the recreation of the Georgian court room, substantial changes to the floor layouts, addition of a roof extension and new staircases, addition of roof terraces and a roof top pool, complete replacement of electrical and mechanical services, addition of new comfort cooling plant, replacement of a passenger lift, a multitude of structural repairs and strengthening, extensive cleaning and repair works both internally and externally, extensive roofing works, the restoration of a Georgian crown glass screen and design of a complementary new glass screen adjacent, the reinstatement of historic fireplaces, detailed repair works to all existing joinery both internally and externally, the reinstatement of historic railings, and the creation of a new sub-basement including lift access and new boundary wall sympathetic to the historic building.