The Royal Marsden Hospital's expansion plans have been unanimously approved by the Kensington and Chelsea Planning Committee, paving the way for a significant increase in healthcare floorspace and enhancing its capacity for world-leading cancer treatment and research.
The decision, made on Monday 13 July 2026, greenlit the demolition of several existing buildings, including the Oratory Building and Grove House, to make way for a new extension. This development aims to enhance the hospital's capacity for theatres, inpatient beds, and diagnostic facilities, crucial for meeting the rising demand for cancer care. The expansion will introduce '67 inpatient beds' and 'Four new theatres (net gain of three, as one existing theatre will be demolished in the process)'.
Councillor Anne Cyron, Chair of the Adult Social Care and Health Select Committee, presided over the meeting where planning officers presented the application, as detailed in the Public reports pack. Representatives from the Royal Marsden NHS Foundation Trust highlighted the urgent need for the expansion, citing the ageing estate as a major constraint on their ability to provide quality care and continued research that ranks it as one of the top cancer centres in the world.
The expansion will address the 'ageing estate' by improving 'clinical functionality and increase overall capacity'. The report details operational challenges stemming from the 'ageing estate', including insufficient capacity for inpatient beds and theatres, poor horizontal and vertical connections, inefficient clinical spaces, small and poor-quality staff spaces, insufficient storage, problematic facilities management provision, and outdated mechanical, electrical, and plumbing installations. The proposal aims to overcome these challenges by increasing clinical floorspace, reconfiguring internal spaces, and redesigning the hospital entrance for inclusivity and accessibility.
Specific enhancements to diagnostic facilities include the addition of 'Two additional PET-CT suites' and an 'Integrated Diagnostics Centre'. These are part of a broader effort to improve patient care and research capabilities. The expansion is projected to bring 'significant public benefits' including 'improved patient care and research capabilities', ensuring the hospital's continued ability to provide 'state-of-the-art clinical space' and enhance 'integrated diagnostics' to improve patient outcomes.
Despite objections from local residents concerning the scale, design, and potential impacts on daylight and sunlight, the committee ultimately determined that the public benefits of the expanded healthcare facilities outweighed the identified harms. Residents raised concerns about 'potential impacts on daylight and sunlight', and while the proposed development would result in 'some reductions of daylight and sunlight to neighbouring properties', these impacts are considered 'acceptable in an urban environment of this density and character' when weighed against the wider scheme benefits and urban context. The report notes that 'To materially improve the daylight and sunlight conditions for neighbouring properties, a substantial reduction in the scheme's massing would be required, thereby significantly decreasing the floor space and overall increased capacity of the hospital.' Design measures such as deep window reveals and spandrel panels are included as privacy measures.
The approved plans include a multi-storey extension, a new frontage building on Fulham Road, and a winter garden. The development also incorporates improvements to accessibility and landscaping.
