ABL3 Architects is an award-winning architecture and design studio based in Chiswick, West London.
We specialise in delivering finely crafted residential, educational and commercial projects, with particular expertise in riverside and waterside sites where context, planning sensitivity and environmental considerations demand a thoughtful, intelligent approach.
Led by Director Tamsin Lemesle, the practice brings together strong design vision, technical excellence and a commitment to creating meaningful spaces that enhance the way people live, learn and work. Tamsin also serves as an Architectural Consultant for Channel 4 and appears as a TV Architect on Jasmine Harman’s Renovation on the Sun, reflecting the studio’s broader mission to make high-quality architecture accessible and inspiring to all.
At ABL3 Architects, we believe that successful architecture is rooted in a deep understanding of place and people. Our work is characterised by meticulous attention to detail, skilled navigation of planning and heritage constraints, and a passion for designs that balance beauty with practicality. Each project — from bespoke homes to educational environments and commercial refurbishments — is approached with care, creativity and collaboration.
We pride ourselves on guiding clients seamlessly from concept to completion, transforming complex briefs into exceptional built spaces. Driven by design quality and grounded in real-world expertise, ABL3 Architects continues to shape contemporary architecture across West London and beyond.

What ABL3 Architects Do…
Crafting Architectural Masterpieces from the Heart of London – ABL3, Where Quality Meets Timeless Design. For over 30 years, ABL3 has been redefining architecture, delivering bespoke projects that withstand the test of time.
Discover the ABL3 Difference: Where Every Project is a personalized vessel for living, working and enjoying.

A journey of love, life, family, and business – thank you for being a cherished part of it all.
Why ABL3 Architects:
ABL3 Architects is a leading architectural firm known for its innovative and sustainable design solutions. With a commitment to creating spaces that harmonise with their environment, ABL3 brings a fresh perspective to each project, ensuring both functionality and aesthetics are seamlessly integrated.

Our Passion
Unparalleled architectural excellence with our award-winning team at ABL3. Passionate about crafting bespoke wonders along the water’s edge, we turn dreams into waterfront realities. Discover the allure of waterside living with ABL3 – where every design is a masterpiece and every property, a statement.

Our Journey
A tale of vision, collaboration, and a touch of family magic. In 1992 R L Adams Architects was founded by Robert Adams, the legacy continued to bloom when Robert Collingwood joined as a partner in 2002. This dynamic duo sculpted a powerhouse team, birthing the Adams + Collingwood ethos. In 2014, a new chapter unfolded as Tamsin Lemesle, Robert Adams’ pragmatic daughter with a background in commercial architecture and project management, took the helm as director, infusing the practice with a fresh, vibrant energy. Experience the evolution, where tradition meets innovation, and family ties shape architectural brilliance.

Publications: In 2017 we celebrated 25 years and published our book, 25 Projects, a collection of our most memorable projects spanning 25 years in practice; projects that have shaped the direction of their work; that stand out as unique; that they learnt from, or have a personal connection to. Read 25 Projects here.
Please get in touch if you would like to speak to our team about your architectural project.



As architectural consultants for “Love It or List It,” ABL3 Architects play a pivotal role in supporting the presenters in guiding homeowners through the decision-making process of whether to renovate their existing home or pursue the option of listing it for a new one. The firm’s team of skilled architects and designers works closely with the show’s hosts and homeowners to create personalised, functional, and visually stunning spaces that cater to the unique needs and preferences of each family.
“We are delighted to be part of ‘Love It or List It’ and contribute our expertise to such a beloved show,” said ABL3 Architects’s director and lead architect, Tamsin Lemesle. “Our goal is to not only meet but exceed the expectations of the homeowners by providing thoughtful design solutions that enhance the overall quality of their living spaces.”
Viewers can expect to witness ABL3’s innovative designs and creative problem-solving skills as they tackle a variety of home improvement challenges on the show. From optimizing space utilization to incorporating sustainable and energy-efficient features, ABL3 is dedicated to creating dream homes that truly resonate with the families featured on “Love It or List It.”

















