ISG has been awarded a major project to revitalise Millennium Bridge House, now known as One Millennium Bridge.

Beltane Asset Management and Angelo Gordon appointed the firm to transform it into a low carbon mixed-use scheme, including new rejuvenated office, retail and public realm facilities.

Buro Four has been selected as project manager for the prominent London office redevelopment which will encompass the full regeneration of the five-storey building. This will include numerous extensions to pave the way for an additional sixth floor and a rejuvenated rooftop. Upon completion, this space will offer a publicly accessible terrace and restaurant, maximising urban greening and external amenity space with new views over the River Thames.


The scheme entails a comprehensive programme of structural intervention and extension works. It further builds on ISG's experience of delivering complex city centre redevelopments, incorporating existing and new elements to create enhanced spaces while minimising carbon production.

Built to achieve BREEAM RFO 2014 (Excellent) and a 61 per cent reduction in Carbon emissions over baseline Building Regulations requirements, the project will harness Circular Economy and carbon reduction principles.

The construction will include demolition back to its structural frame, retaining approximately 60 per cent of the building’s existing structure and an all-timber feature kite roof instead of a more carbon intensive steel frame. The energy efficient approach to heat recovery and thermal storage also works to reduce the amount of rooftop plant required to service the building.

The scheme also includes Blue roof areas, providing a sustainable urban drainage system as well as extensive green roof areas. An all-electric solution that maximises the area available for a publicly accessible rooftop garden, further encourages biodiversity, attenuates rainwater and reduces the urban heat island effect.