New Masterplan Team Appointed for St Mary's Hospital Redevelopment

G&T is providing Project Management services, supporting Imperial College Healthcare NHS Trust on both the new hospital design (RIBA Stages 2–7) and the commercial masterplan for the redevelopment of land released by the hospital into a Life Sciences Campus, alongside Savills (planning strategy), Gillespies (landscape design) and LCA (consultation). 

Stanhope, a London-based development and asset manager with a 30-year track record delivering complex urban regeneration, will oversee the masterplanning process for the whole estate. Architects Allies and Morrison will lead masterplan design. They will work alongside HOK, who continue as the hospital’s design architects.

A New Hospital and Wider Regeneration 

The teams are developing proposals that will transform the current nine-acre St Mary’s site, some of which date back to 1845, with a completely new, state-of-the-art teaching hospital and major trauma centre as well as thewider regeneration, including further expansion of Paddington Life Sciences, the cluster of surrounding life sciences and data companies.

Independent analysis shows that, as well as improving health and healthcare, this development will create 12–15,000 jobs and up to £15 billion in new economic activity over ten years. It will also support the development of WestTech London, the wider research and innovation cluster across west London led by Imperial College London. 

Matthew Tulley, Redevelopment Director at Imperial College Healthcare NHS Trust said: “This marks a critical step in our journey to finally deliver the urgently needed new St Mary’s, designed around the needs of our patients, staff and local communities. Our approach also builds on our long legacy of clinical breakthroughs, embedding research, education and innovation in the new facilities and surrounding area to help us solve the next generation of health challenges. I'm delighted that we have such a range of expertise in our project team, each a leader in their own field, to help us bring our vision to life.”

Laura Mazzeo, G&T Partner, said "This is a complex and significant programme that brings together a new hospital and a wider regeneration of the site within a live healthcare environment. Our role is to help establish a masterplan that supports hospital delivery while creating long-term benefits for patients, staff and fostering wider social and economic benefits to Paddington, Westminster and London."

Design Approach, Phased Delivery and Next Steps

The new St Mary’s Hospital will enable services to be organised around patient, staff and visitor needs, under one roof and on a smaller, more efficient footprint. It will have built-in flexibility so that it can adapt to new demands and, at over 800 beds, have around 25% more inpatient capacity to respond to expected population changes. It will also include spaces to embed research, education and innovation, helping the hospital to continue its longstanding legacy of clinical breakthroughs.

Once the new hospital is built on the east of the site, the land that is then surplus to requirements will be redeveloped. As well as helping to offset the building costs, supporting the further expansion of Paddington Life Sciences and contributing to wider community benefits, this approach enables services to remain operational throughout the development.

Design work for the hospital and overall masterplan is now underway, with the next phase of public engagement and consultation planned to start in February 2026. There will be a range of opportunities for patients, staff and local communities to help ensure the hospital and wider site are rooted in local priorities and designed around user needs. The Trust is aiming to submit a planning application in spring 2027.