Warmer Homes London appoints complete Senior Leadership Team
Warmer Homes London, a new partnership between the Mayor of London and London Councils to make the capital’s homes greener, healthier and more affordable to heat, has confirmed its senior leadership team.
The four‑person team brings together expertise in retrofit delivery, forging public sector alliances, advancing health outcomes measurement, and harnessing data innovation. They will work with partners across the industry to tackle systemic barriers and create the conditions for scaled, effective delivery in London.
The team will be led by Eleanor Purser, who has been appointed as Warmer Homes London’s Managing Director. Having served as Interim Director since January 2025, her appointment comes following a competitive external recruitment process. Eleanor brings more than 20 years of senior public sector leadership experience in place regeneration, net‑zero transformation and inclusive growth working at the national, regional and local level including within large housing associations.
She is joined by Jack Ostrofsky, formerly Retrofit London Programme Director at London Councils, who has been appointed Director of Programmes and Partnerships. Jack will lead the cross-sector collaboration driving London’s £231 million Warm Homes grant programmes, including through England’s largest Warm Homes: Social Housing Fund Strategic Partnership.
Two external appointments complete the team: Zung Nguyen, joining from the United Nations Development Programme as Director of Retrofit Strategy and Services, and Carly Tutty‑Johnson, appointed Head of Operations from the London Office of Health and Improvement and Disparities, within the Department of Health and Social Care.
Together, the leadership team will drive forward Warmer Homes London’s mission on behalf of the Mayor and the Boroughs to improve the energy efficiency of Londoners' homes.
Warmer Homes London Board Co-Chair, Deputy Mayor for Climate Mete Coban:
“I am pleased to welcome our full senior leadership team – their knowledge and experience will be instrumental to achieving the large-scale, impactful change that Londoners urgently need. No one should have to spend winter in a cold, damp house but with 10 per cent of Londoners living in fuel poverty, making our homes more energy efficient and cheaper to heat is a vital part of building a better, greener and fairer city for everyone. Warmer Homes London demonstrates what we can achieve when we come together with a shared commitment to deliver the best for our residents.”
Warmer Homes London Board Co-Chair, Brenda Dacres OBE, Mayor of Lewisham:
“Warmer Homes London is how we, as a city, ensure residents remain at the heart of high‑quality retrofit delivery. As Joint Co‑Chair of the Board, I look forward to working closely with Warmer Homes London's senior leadership team to deliver the best for Londoners. The skills and expertise within this team will be a vital asset in removing barriers around delivery for partners and ensuring homes across our city are safe and affordable to heat.”
Eleanor Purser, Managing Director:
“It is an enormous privilege to take on the role of Warmer Homes London's Managing Director. Warmer Homes London brings together regional and local government in London, united by a clear mission: to deliver homes that are greener, healthier, and more affordable to heat. Retrofit is a necessary pathway toward improved health outcomes, investment in our local communities, and achieving our Net Zero targets. I look forward to leading an expert senior team to deliver these collective goals and drive forward system-wide change”
Jack Ostrofsky, Director of Programmes & Partnerships:
“Partnership is the key to tackling the practical barriers that have held back retrofit delivery. Warmer Homes London, founded on collaboration, recognises that working together is the only way we can deliver healthier, warmer homes for London. I'm confident that collaboration and coordination will be the vehicle through which we achieve the scale of delivery the city needs.”
Zung Nguyen, Director of Retrofit Services & Strategy:
"At a time when the capital must rapidly scale its approach to domestic retrofit, Warmer Homes London's establishment of a pan-London, resident-first delivery model is crucial. I am pleased to join Warmer Homes London on their mission to deliver energy efficient homes for Londoners. The opportunity to work with partners across the industry to build digital systems and services that shorten the feedback loop, develop industry knowledge and drive-up quality is both exciting and essential”
Carly Tutty-Johnson, Head of Operations:
“I am delighted to join Warmer Homes London at this pivotal moment. Retrofit is about more than just physical improvements to homes: it’s about ensuring homes remain safe, cutting bills for families citywide, keeping people healthier, and lessening the burden on the NHS. I look forward to working with the senior leadership team to build Warmer Homes London’s operational capabilities, and deliver this key mission for London.”
About Warmer Homes London
Warmer Homes London was launched in February 2025, as a joint partnership between the Mayor of London and London Councils. Warmer Homes London works in partnership with boroughs and housing associations to deliver £231m in funding to improve the energy efficiency of Londoner’s homes, making them greener, healthier, and more affordable to heat.
To boost the impact of £121m in government funding, London boroughs and housing associations have combined their own investment and committed over £100m of additional resources into retrofitting their own social housing stock. The Mayor will invest almost £10m over four years.
About the Senior Leadership Team
Eleanor Purser officially joins as Managing Director as of January 2026. Having served as Interim Director since January 2025, she has previously held roles including Co-Strategic Director at the London Borough of Lambeth, Director of Regeneration at Notting Hill Genesis, and Executive Head Economic Development, Development Planning and Sustainability at the London Borough of Sutton.
Jack Ostrofsky has transitioned to Director of Programmes and Partnerships at Warmer Homes London. He joined London Councils as Retrofit London Programme Director in 2023, previous roles include Technical Director at ARK Consultancy, Head of Sustainability and Design at the Southern Housing Group, and the Head of Design and Technical and Peabody. He worked with DLUHC on shaping the Building Safety Act, been part of a Building Regulations Advisory Committee working group on the Golden Thread, and is currently a member of the PAS 2035/2030 Retrofit Standard’s steering group.
Zung Nguyen joins as Director of Retrofit Strategy and Services from January 2026. She brings experience delivering complex, data-led digital and service transformation programmes across the built environment, climate and public sectors. Zung has held senior roles at Arup and TPXimpact and, most recently, worked at the United Nations Development Programme. Her work has spanned the design and delivery of national-scale, community-driven platforms supporting climate action and public infrastructure. Her experience in service design, systems thinking and building enabling digital and operational services will be central to Warmer Homes London’s work to improve the quality, pace and scale of retrofit delivery across the capital.
Carly Tutty-Johnson will join as Head of Operations at the end of January 2026, from the London Office for Health Improvement & Disparities, within the Department of Health and Social Care. There, in her role as Head of Business Operations & Stakeholder Engagement, she was responsible for overseeing strategic operations to drive forward a shared vision to make London the healthiest global city in the world. Carly has over 20 years of experience in delivering projects, programmes and policies that improve public health outcomes and reduce health inequalities, with particular expertise in healthy ageing. She has previously held roles at Public Health England, and the Centre of Mental Health.
