Edward Williams Architects

What Edward Williams Architects does

Edward Williams Architects, now operating under the legal entity Cagni Williams Associates Ltd, is a London-based architectural studio founded in 1990 (per company history; firmographics data also references 2011, likely a re-incorporation date) and employing 11–50 people. The firm provides a consolidated suite of eight professional services: Architecture & Design, Sustainability, Feasibility, Materials, Planning Support, Project Management, Digital Modelling, and Adaptive Reuse. Its underlying technology stack centres on BIM and digital modelling tools for design development, visualisation, and technical documentation, with no proprietary platform or AI/ML capabilities disclosed.

The studio serves UK and international clients across six vertical segments: Healthcare & Life Sciences, Residential, Education, Civic/Culture/Workplace, Urban Design & Masterplan, and International. Notable engagements include the Midland Metropolitan University Hospital, the University College Hospital Grafton Way Building, Maggie's Centre, a courtyard housing development in Stratford, and offices in Paddington, indicating meaningful exposure to public-sector healthcare and institutional work. In 2025 the firm launched Cagni Williams Energy, a wholly-owned sub-brand focused on decarbonisation, sustainable systems, and ambient loop heat networks, extending its offering into energy advisory for residential, commercial, and community developments.

Revenue is generated through project-based professional services fees tied to design, planning, and project management engagements, with quote-based pricing that varies by scope, complexity, and sector. Go-to-market is sales-led and direct, combining client referrals, professional reputation, and structured marketing assets (website, blog/insights, email newsletter, brochure download). The firm is RIBA-affiliated, privately held with no disclosed parent or institutional investors, and has no disclosed funding rounds, M&A activity, or external capital inflows.

Name

Edward Williams Architects

Legal name

Cagni Williams Associates Ltd

Website

https://edwardwilliamsarchitects.com

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

11–50 employees

Short description

Cagni Williams (formerly Edward Williams Architects) is a London-based architectural studio of 11–50 employees offering architecture, sustainability, feasibility, planning, project management, and digital modelling services across healthcare, residential, education, civic, and international sectors, with a dedicated Cagni Williams Energy sub-brand focused on decarbonisation.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (541310)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industries

Building Information Modeling (BIM) & Digital Design Services (BPAHAKAK), Sustainable/Green Building & LEED Consulting (BPAHAKAG)

Keywords

• Architectural design services
• Master planning services
• Sustainable building design
• Healthcare architecture
• Urban design masterplanning

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D

Revenue model

1. Architectural Services: Professional architecture services delivered through project-based engagements. Revenue is generated through design fees, planning submissions, and project management services for residential, commercial, civic, healthcare, and educational projects.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Edward Williams Architects (operating as Cagni Williams) is a London-based architectural studio delivering integrated design, master planning, feasibility, sustainability, project management, and digital modelling services across healthcare, residential, education, civic, and international sectors. The firm also operates a specialised Cagni Williams Energy sub-brand focused on decarbonisation, ambient loop heat networks, and energy-efficient building solutions for residential, commercial, and community developments.

Product overview

Cagni Williams is a contemporary architectural studio offering a unified suite of design and consultancy services. The core offering consists of eight integrated service areas: Architecture & Design, Sustainability, Feasibility, Materials, Planning Support, Project Management, Digital Modelling, and Adaptive Reuse. These services work together to deliver projects across healthcare, residential, education, civic/culture, urban design/masterplanning, and international sectors. The studio also operates a specialized sub-brand called Cagni Williams Energy, which focuses specifically on decarbonisation solutions including sustainable systems, ambient loop heat networks, and holistic energy planning for residential, commercial, and community developments.

Differentiator

Problem solved

Functional benefit

Brands

• Cagni Williams Energy: A division focused on delivering practical and innovative solutions to help clients decarbonise their projects and create energy-efficient spaces. The work spans residential, commercial, and community developments, offering expertise in sustainable systems, ambient loop heat networks, and holistic energy plans.

Named customers6 records

Segments7 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators1 record

Recent moves4 records

Expansion highlights4 records

Direct peers

• Make Architects: Make Architects is a London-headquartered practice delivering residential, education, healthcare and masterplanning work at a similar mid-tier scale. Its BIM-led digital delivery model parallels Cagni Williams' Digital Modelling emphasis.
• Haworth Tompkins: Haworth Tompkins is a London architectural studio focused on theatre, education, healthcare and heritage/adaptive reuse projects. Its emphasis on technically excellent, sustainable public-realm architecture places it squarely alongside Cagni Williams' service profile.
• Purcell: Purcell is a UK architecture practice noted for heritage, conservation and adaptive reuse alongside education and civic work. Its strong overlap with Cagni Williams' Adaptive Reuse service and public-sector client base makes it a close sector peer.
• Corstorphine & Wright: Corstorphine & Wright is a UK architectural practice of similar size with deep healthcare, education and civic expertise, including major NHS commissions. It directly competes for the same institutional client mandates.
• Stanton Williams: Stanton Williams is a London-based architectural practice of comparable size with overlapping sector expertise in healthcare, education, cultural and civic buildings, including NHS hospital projects. It is among the most direct comparables for Cagni Williams on multi-sector UK public-realm architecture.
• Benoy: Benoy is a UK-based, internationally active architecture practice with comparable sector spread across commercial, residential, retail and masterplanning. Its mix of UK-rooted design and global project delivery matches Cagni Williams' positioning.
• Rolfe Judd: Rolfe Judd is a London architecture practice with strong healthcare, education and residential credentials and similar headcount to Cagni Williams. Both firms target NHS and UK institutional clients with comparable multi-sector portfolios.
• Allies and Morrison: Allies and Morrison is a London-rooted architectural practice working across residential, education, civic and urban masterplanning at a similar tier to Cagni Williams, with documented expertise in healthcare and cultural commissions. Its scale and public-sector client mix closely mirror the anchor firm.

Broad incumbents

• Foster + Partners: Foster + Partners is a globally scaled architecture firm headquartered in London that operates across healthcare, civic, education and masterplanning with much greater resources. It represents the higher-end incumbent against which Cagni Williams competes on flagship UK projects.
• Zaha Hadid Architects: Zaha Hadid Architects is a globally recognised London practice competing for high-profile cultural, civic and international commissions. It operates at a much larger scale but overlaps with Cagni Williams' international and civic ambitions.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat2 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/ewaarchitects
• Facebookfacebook.com/EdwardWilliamsArchitects
• LinkedInlinkedin.com/company/edward-williams-architects

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Edward Williams Architects