These London-based companies are primarily established architecture and planning firms, many with a global reach. Foster + Partners, with 3025 employees, is a global architecture and design studio focusing on sustainable urbanism. ZHA specializes in innovative cultural, corporate, and residential spaces. Benoy delivers sustainable solutions for the built environment, and Grimshaw is a global architecture practice designing sustainable buildings across various sectors.
A notable pattern among these companies is their long history, with many founded mid-20th century. RIBA, established in 1834, is a global professional membership body. PRP, founded in 1963, has 60 years' experience in housing design and urban regeneration. Sheppard Robson, founded in 1938, designs people-centred buildings with a focus on sustainability.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Foster + Partnersfosterandpartners.com
Global architecture and design studio focusing on sustainable urbanism, with diverse international teams and worldwide offices. |
3,025 | |||
| 2 |
Automotive Market
The company offers comprehensive social media marketing services, including strategy, content creation, campaign management, and data analysis to help businesses thrive online |
3,000 | |||
| 3 |
10N Collective10ncollective.com
Global collective of urbanism, architecture, and design experts focused on sustainable citymaking, environmental and social responsibility across continents. |
1,735 | |||
| 4 | 1,250 | ||||
| 5 |
AutoCAD Designerorg.uk
Helping clients connect with top architects and architectural designers for their projects, ensuring they find the best professionals in the industry |
1,019 | |||
| 6 | 779 | ||||
| 7 |
ZRPzrparchitects.co.uk
A dynamic design studio in London specializing in architecture for education, residential, commercial, and ecclesiastical buildings, with experience in listed structures |
744 | |||
| 8 |
Freelance Architectfreelancehubs.com
Hire freelance architects for project-based work, paying only for hours worked Find skilled freelancers for affordable architecture services on our platform |
668 | |||
| 9 | 610 | ||||
| 10 |
Grimshawgrimshaw.global
A global architecture practice with offices worldwide, specializing in designing innovative, sustainable buildings across various sectors and winning numerous awards |
531 | |||
| 11 | 520 | ||||
| 12 |
tp bennetttpbennett.com
Independent architectural and design practice with over 100 years of experience, offering cross-sector expertise and a strong international presence. |
482 | |||
| 13 |
Sheppard Robsonsheppardrobson.com
collective of architects, interior designers, and masterplanners, designing people-centred buildings, spaces, and places with a focus on sustainability and innovation for life. |
444 | |||
| 14 |
10 Design10design.co
An international architecture and master planning practice, specializing in innovative design solutions for multicultural projects across the globe |
424 | |||
| 15 |
LUClanduse.co.uk
An award-winning environmental consultancy specializing in holistic services to create sustainable cities, towns, and landscapes while addressing climate and biodiversity crises |
405 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Purcellpurcellarchitecture.com
A multidisciplinary team of architects, designers, and consultants specializing in transforming and creating innovative spaces for clients across the UK and Asia Pacific |
394 | |||
| 17 |
Home & Makerhomeandmaker.com
This company provides online architecture services for domestic home design, allowing homeowners to collaborate with experienced architects and designers on various projects |
386 | |||
| 18 |
Allford Hall Monaghan Morrisahmm.co.uk
Designing and reinventing buildings across commercial, residential, healthcare, life sciences, education, and civic sectors in the UK and internationally |
355 | |||
| 19 |
Pascall+Watsonpascalls.co.uk
Offers architecture, masterplanning, interior design, wayfinding, and BIM expertise for transportation, education, leisure, and other sectors globally since 1956. |
328 | |||
| 20 |
SHH Architecture & Interiorsshh.co.uk
Award-winning architectural and interior design practice founded in 1991, based in London, working globally across residential, hospitality, and commercial sectors |
315 | |||
| 21 |
NLAnla.london
An independent center for London's built environment, facilitating discussions and events to shape a better city through research and exhibitions |
313 | |||
| 22 |
Allies and Morrisonalliesandmorrison.com
Designing lasting buildings and shaping enduring urban spaces, focusing on detailed craftsmanship and context, with a collaborative, multidisciplinary approach. |
311 | |||
| 23 |
Royal Town Planning Institutertpi.org.uk
The organization champions planning for prosperous communities, shaping policies and setting professional standards to address complex challenges in the UK |
309 | |||
| 24 |
Hawkins\Brownhawkinsbrown.com
Design and deliver innovative, socially sustainable buildings across education, workplace, residential, infrastructure, and community sectors with collaborative approach. |
252 | |||
| 25 |
HTA Designhta.co.uk
A multi-disciplinary practice specializing in housing and regeneration, with teams in architecture, landscape design, planning, urban design, sustainability, and graphic design |
242 | |||
| 26 |
Hopkins Architectshopkins.co.uk
An international architectural practice with studios in London and Dubai, focusing on clear design thinking, material potential, craft, and context for innovative buildings worldwide |
171 | |||
| 27 |
ADP Architectureadp-architecture.com
Innovative architecture firm focused on creating positive experiences for people and communities through sustainable, engaging, and belonging-focused design solutions |
164 | |||
| 28 |
Donald Insall Associatesdonaldinsallassociates.co.uk
Architectural practice specializing in conservation, heritage consultancy, and new design within historic settings, balancing tradition with transformation for purposeful, resilient environments. |
162 | |||
| 29 |
Resiresi.co.uk
Innovative home transformation company with a team of specialists offering financing, design, planning, and construction services supported by industry-leading technology |
160 | |||
| 30 |
CABEwebarchive.nationalarchives.gov.uk
Providing expert independent design advice to improve the quality of buildings and spaces in England through public engagement and professional debate |
159 | |||
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
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The same list elsewhere in United Kingdom
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- Architecture and Planning companies in England 78