We have been working with the TUC on a multi-phased refurbishment of their Grade 2* listed headquarters in London for 27 years. Our work has been characterised by a consistent architectural approach. Retained original fabric has been carefully restored, all the services have been upgraded, access has been improved and interventions have been designed in a contemporary manner. The approach has been developed in close collaboration with statutory heritage authorities. Over the past 27 years we have completed numerous projects within the curtilage of the existing building and the work is still ongoing. Projects included extensive work on the conference facilities, the upgrade of the main reception, café and public toilets, the provision of disabled access and reconfiguration of offices and meeting rooms, including the General Secretary’s suite and the installation of a highly transparent ETFE roof over the internal courtyard. Recently we completed our largest project at Congress House to date – a refurbishment of the south side to create lettable offices and new reception facilities.