Roots in the Sky

The former Blackfriars Crown Court, a 1960s structure in Southwark, presented an opportunity to create a next-generation workspace that prioritised sustainability, community engagement and biodiversity. The challenge was to transform this outdated building into a 385,000 sq ft mixed-use development featuring London’s first rooftop urban forest, while achieving best-in-class environmental and wellbeing standards. The project aimed to retain much of the existing structure to reduce embodied carbon, integrate extensive green spaces and provide amenities for both occupiers and the local community.

G&T provided Project Management services throughout the redevelopment. The design retained the existing foundations and first two storeys, adding four new levels using a lightweight hybrid steel and CLT frame capable of supporting 1,300 tonnes of soil for the rooftop forest. The building incorporates passive ventilation, openable windows and a full-height atrium to enhance indoor air quality. Amenities include a rooftop restaurant, bar, swimming pool heated by waste energy, community gardens, a 3,000 sq ft community barn and affordable workspace. The development targets BREEAM 'Outstanding', WELL Platinum and WiredScore Platinum certifications.

Upon completion, Roots in the Sky will set a new benchmark for sustainable, community-focused office developments in London. The project delivers extensive green spaces, enhances biodiversity and provides valuable amenities for both occupiers and the local community. G&T's project management expertise ensured the successful delivery of a complex scheme that balances environmental responsibility with social value and commercial viability.