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About the Studio

THISS is an RIBA chartered, London based architecture and design studio. We develop and uncover unique and exciting spaces with a strong grounding in context and place. Our projects and collaborations sit within the realms of architecture and landscape. Using carefully selected materials and low-impact methodologies, we apply a climate conscious approach and digital crafting tools wherever possible. Live projects include a new build Passivhaus family home, a large-scale and immersive horticultural arts commission, a collaborative sculptural work for the 2021 Seoul Biennale and a number of bespoke, collaborative residential projects. The studio specialises in nurturing a spirit of possibility, adventure, curiosity, collaboration and resilience. We find interesting ways to make challenging things happen.

Associate Director:

Antonia Halse

Architectural Designers:

Dan Pope
Maciej Adaszewski

Collaborators :

Trigger Stuff
Carl Robertshaw
   Bronia Housman
   Format Engineers
   Ryan Powell
ìssí nanabeyin
Nina Jua Klein
William Cheshire
Charlotte Coulais
Ivan Morison

Ben Bradshaw
Duncan Strong
Lee Gonzales
Afshin Dehkordi
Elisa Franceschi



Tamsin is a Passivhaus Certified, ARB and RIBA registered Architect with experience in the retail, hospitality, commercial, education and residential sectors.

Prior to founding THISS, Tamsin worked for Niall McLaughlin Architects to deliver highly crafted, large scale buildings. Formerly Tamsin worked for Michaelis Boyd Architects gaining experience in the hospitality and retail sectors as well as working to deliver high end residential projects in West London and Southern France. Tamsin previously lived in Iceland working for a local landscape-driven design practice focusing on projects in the tourist and hospitality sectors (when not skiing across frozen Arctic landscapes).

Tamsin is a Senior Teaching Fellow at the Bartlett School of Architecture where she runs a Design Unit focusing on contemporary making and experimental processes. This context of research and experimentation keeps the studio astride of innovations in design, concepts, critical theory and digital manufacturing.



Sash is a registered ARB Architect and Designer. He has extensive experience in the arts, commercial and private residential sectors.

Sash specialises in remote urbanism and landscape. Through extensive exploration and collaboration, Sash has engaged and participated with geographically marginal communities in Japan, Russia and across the Middle East to explore the relationship between nature and the built environment.

Sash has over 15 years of experience leading complex design and building projects. He has worked at various architectural practices including Hawkins Brown and Wiel Arets Architects in Amsterdam and has collaborated with artists Carl Robertshaw and Ivan Morison to create improbable flying kites and sculptures.

Sash studied Architecture at The Bartlett. He is a Design Tutor at The London Metropolitan School of Art, Architecture & Design, and is a guest tutor at The Bartlett and The University of Nottingham.

Outside of the studio Sash is two-time sport kite world champion and cycled unassisted from London to Delhi in 2011.

Selected Exhibitions and Publications


2013 • RIBA President’s Medal

2013 • Sir Bannister Fletcher Medal

2010/12/14 • World Sport Kite Champions

Selected Publications + Exhibitions

2021 • Seoul Biennale of Architecture and Urbanism

2019 • Dezeen, Ikea Upcycles furniture into colourful homes for Wildlife. Web.

2019 • Wildhomes, an exhibition of homes for wildlife in Sutcliffe Park, London

2016 • RIBA Journal, ‘Breaking Boundaries’

2015 • RIBA President’s Inauguration Exhibition, London (and travelled internationally)

2014 • RIBA Education Yearbook, ‘Magnitogorsk’

2013 • 100% Design, ‘Paper Space’. London – Exhibition of a CNC machined oak and waterjet cut steel table made by THISS works

2013 • Design Boom, Sash Scott Reading, Heather + Ivan Morison: Three Cubes Collide Kite. Web.

2013 • Wallpaper Magazine, World Architecture Graduates Directory

2013 • Architectural Review, ‘Russia Under the Spotlight’

2010 • London Festival of Architecture, Union Street Urban Orchard – Exhibition of a CNC machined plywood flatpack prototype for a bus stop.

Privacy Policy

We are committed to protecting your privacy and the confidentiality of your personal information. Our policy is not just an exercise in complying with the law, but a continuation of our respect for you and your personal information. You can read more about our privacy policy and data management here

Our Cookies Policy is available to read here

Diversity, Equity and Inclusion Policy

THISS are committed to building a culture which is self-reflective, constructive, safe, emergent, inclusive, anti-racist and intersectionally conscious.

We centre our relationships with our co-workers and clients in everything we do. THISS aspire to continue to build a working environment which is equitable for all. We strongly believe in the value of an inclusive, diverse and equitable creative and cultural sector and hold a zero-tolerance policy for racism, sexism, ableism, ageism or any other discriminatory behaviour.

We create quarterly
and annual Diversity, Equity and Inclusion goals which we are internally accountable to company-wide and which are available for all employees, collaborators and clients to access and feed back on along with a resources archive which contains further information on our values along with recommended reading and/ or audiovisual material.

We strongly believe in the value of an inclusive, diverse and equitable creative and cultural sector and acknowledge the discriminatory and structural limitations currently in place which will take generations to dismantle. We are aware that we are engaging in both a short and long process where we will always be learning,
 hence our commitment to regular accountability, feedback and sharing resources.

Last updated August 2021

© 2020