Hadley acquired the former GSK Headquarters in November 2023, with a vision to deliver a landmark scheme for Brentford and bring much-needed homes to Hounslow. The hybrid planning application for the redevelopment of the site was approved in March 2026.
Our plans seek to transform the site, creating a new neighbourhood that reflects and complements the changing landscape of Brentford, delivering a mixed-use neighbourhood with a range of new public spaces, community amenities, commercial offerings and employment opportunities. Hadley is working alongside architects Haworth Tompkins, Metropolitan Workshop, Studio Egret West and dRMM to deliver this scheme.
Enquire about this property:
Following two rounds of consultation, a comprehensive co-design programme, drop-in engagement, pop-up events and ongoing dialogue with the community, the London Borough of Hounslow and a broad range of stakeholder groups, we have now achieved planning approval for the redevelopment of 980 Great West Road. The development will include around 2,300 new homes across a range of housing types, including Social Rent homes, Co-Living and Purpose Built Student Accommodation.
The plans allocate 61% of the site to public realm. Central to our proposals is bringing down the fences and opening the site to Brentford for the first time, linking it with neighbouring spaces and creating a fully accessible site. The varied edges of the site present the opportunity to create vibrant and welcoming zones, from the unique energy of beneath the M4 and the calm of the River Brent, to a biodiverse, wildlife-rich boundary with Boston Manor Park. Our masterplan maximises these opportunities, comprising four key spaces that seamlessly connect whilst having their own distinct character and qualities – Arrival, Central, the Underside and Riverside.
The proposals include over 300,000 sq ft of commercial, community, and educational space, with flexible areas for pop-up markets, events, and small-scale businesses to support local employment and the economy. Residents and visitors will enjoy a diverse new range of offerings, including food and beverage, leisure and healthcare facilities, designed and programmed to complement existing local amenities.
Sustainable and regenerative design has been at the forefront of shaping our proposals, creating a masterplan that carefully balances site constraints, placemaking and delivering high-quality homes, all whilst saving embodied carbon and reducing waste. Our submitted plans target 60% of the existing building structure for adaptation and repurposing. The reuse of the existing superstructure and retention of the substructure and basement alone saves 34,500 tonnes of embodied carbon. In addition, we are working with Material Index during the building's soft strip. Materials have been carefully catalogued for reuse, both on and off-site, or recycled. We aim to divert 95% of the building materials from landfill through this process.
