25 Sustainable Architects in London Leading Eco-Friendly Design

London’s design world is undergoing a major shift, with sustainability becoming the driving force behind new architecture. Today’s leading studios are proving that low-carbon, energy-efficient, and environmentally responsible design can still be bold and beautifully crafted.

This list features 25 real, socially active architects and firms in London who are shaping the future of eco-friendly design. From Passivhaus experts to circular-construction innovators, these are the names leading the city toward a greener, smarter built environment.

1. A-Zero Architects

A-Zero work out of London on low-energy, net-zero buildings where environmental performance and elegant design go hand in hand. They strive for climate-responsive architecture, designing homes that are both beautiful and energy-conscious.

2. Feilden Clegg Bradley Studios (FCB Studios)

FCB Studios are deeply committed to sustainable design; their work ranges from timber buildings to low-carbon campuses and civic projects. They believe architecture can be a powerful force for social and environmental change.

3. Make Architects

Based in London, Make is a certified B Corporation and employee-owned , sustainability is built into how they run and design. They push for net-zero carbon across their work, using innovative materials and circular design principles.

4. Mikhail Riches

Mikhail Riches are noted for their socially responsible, low-carbon housing projects. Their design philosophy combines high environmental standards with practical, human-centred architecture.

5. Waugh Thistleton Architects

Leaders in timber architecture, Waugh Thistleton specialise in cross-laminated timber (CLT) and other sustainable materials. Their London-based projects show how whole buildings can be carbon-smart without sacrificing design quality.

6. Graham Ford Architects

Graham Ford Architects are committed to net-zero carbon and retrofit design, integrating sustainability from the very start of each project. Their London studio is dedicated to ecological design, low-energy solutions, and long-life buildings.

7. Rodić Davidson Architects

This firm specialises in sensitive restorations of historic buildings, upgrading them with modern sustainable technologies , reducing carbon without losing heritage. Their London practice merges conservation with performance.

8. One Point Five Architecture

Based in East London, One Point Five Architecture helps clients reach net-zero through Passivhaus design, deep retrofits, and expert sustainability advice. Their approach is pragmatic, beautiful, and climate-focused.

9. Ash Sakula Architects

Ash Sakula are London-based designers known for material-led, community-rooted architecture and sustainable practices. Their work often includes reclaimed materials and passive design strategies, making eco-design feel grounded and humane.

10. EPR Architects

With their London studio, EPR Architects delivered a net-zero retrofit of the All Saints building , proving that sustainable design can be applied to large-scale commercial and residential architecture.

11. Ben Adams Architects

Ben Adams Architects runs as a Net Zero Carbon practice, designing elegant and energy-efficient buildings across London. They measure and offset their own studio emissions, and integrate sustainability into their structural and material choices.

12. Ecologic Architects

Ecologic Architects is deeply rooted in ecological, ethical, and equitable design. Based in London, they work on community and retrofit projects with a strong social conscience, emphasizing reduced waste and sustainable materials.

13. Trehearne Architects

Trehearne is committed to net-zero and sustainable operations. Their London practice has made strong internal commitments, including a green working group and carbon reporting, and they operate with long-term, responsible design in mind.

14. Feilden Fowles

Feilden Fowles (based in London) is known for resilient, low-carbon architecture. Their work considers life-cycle carbon and uses sustainable materials and adaptive reuse strategies.

15. Grimshaw Architects

Grimshaw is a well-known international studio with a London office. Their work often tackles large-scale infrastructure and building projects with sustainability at the core.

16. A-Zero Architects

A-Zero Architects are based in London and specialise in low-energy design, responsive architecture, and Passivhaus projects.

17. Justin Bere / bere:architects

Justin Bere is a pioneer of Passivhaus design in London. His firm, bere:architects, champions certification, zero-energy homes, and sustainable consulting.

18. Ecologic Studio (ecoLogicStudio)

While not strictly “architect-only”, ecoLogicStudio (based partly in London) works at the intersection of architecture, biotech, and ecological design , making buildings that learn from nature.

19 . Sarah Wigglesworth Architects

Sarah Wigglesworth’s work is very sustainability-focused, especially with low-energy, natural-material architecture like straw bale construction.

20 . Farrells

Farrells is a large London-based architecture and urban design firm that integrates sustainability, transit-oriented development, and ecological urbanism in its projects.

21. Stanton Williams

Stanton Williams (London-based) are known for their sustainability strategy, long-life / loose-fit design, and commitment to the RIBA 2030 climate challenge.

22. Studio Morén

Studio Morén is a London-based architecture and design studio deeply committed to sustainability. Their practice is a signatory of Architects Declare, and they actively embed bioclimatic and passive principles in their projects.

23 . Graham Ford Architects

Already mentioned before, but reaffirmed: they are very active in sustainable retrofit, net-zero design, and ecological performance.

24. Warehome

Warehome is a London-based firm that specialises in Passivhaus and low-energy architecture. Their website shows they are fully focused on energy efficiency, healthy homes, and sustainable building processes.

25 . Gresford Architects

This London / UK-based firm is working on timber-frame Passivhaus homes (see their Instagram), showing a clear commitment to sustainable construction and low-carbon building.

Sustainable architecture in London is no longer a niche , it’s the new foundation of modern design. The architects highlighted here are raising the bar by combining creativity with climate responsibility, showing how buildings can be both inspiring and environmentally sound.

As London moves toward net-zero goals, these studios are at the forefront of that change, redefining what sustainable living and urban development look like. Their work makes one thing clear: the future of the city will be greener because of them.