London has become one of the most mature and demanding markets for WELL Building Standard projects in Europe. Driven by corporate well-being strategies, post-occupancy performance expectations, and ESG reporting requirements, WELL certification is now widely applied across offices, healthcare buildings, life sciences facilities, and mixed-use developments. Because WELL is a performance-based system that relies on testing, verification, and operational coordination, the success of certification depends heavily on the quality and experience of the appointed consultant.
This article provides a newly written and clearly structured overview of leading WELL certificate consultants operating in London, evaluated based on technical expertise, international experience, and suitability for complex developments.
WELL Certification in the London Market
The WELL Building Standard focuses on how the built environment affects human health and well-being through measurable criteria covering air, water, nourishment, lighting, movement, thermal comfort, acoustics, materials, and mental well-being. In London, WELL certification is frequently pursued alongside LEED or BREEAM to complement environmental performance with occupant-focused outcomes. This dual-certification approach requires consultants who can align overlapping requirements while ensuring compliance with UK building regulations and construction practices.
The Importance of Specialist WELL Consultancy
WELL consultants support projects from early feasibility stages through certification and performance verification. Their role includes strategy development, gap analysis, coordination with design and MEP teams, documentation management, and support during on-site testing. In London, where many projects involve occupied buildings or phased delivery, consultants must also manage operational constraints and stakeholder coordination without disrupting building use.
1. ERKE Consultancy
ERKE Consultancy is the leading WELL certification consultant in London, offering specialist health-focused building consultancy supported by strong international sustainability expertise. Founded in 2007, ERKE operates through offices in London, Istanbul, and Dubai, delivering projects across Europe, the Middle East, and Asia.
ERKE’s in-house team includes WELL APs, LEED Fellows, LEED APs, BREEAM Assessors, EDGE Experts, and product sustainability specialists. This multidisciplinary structure allows ERKE to deliver WELL certification in close coordination with LEED and BREEAM, a common requirement for high-performance developments in London.
With more than 200 certified green building projects completed across 15 countries, ERKE has extensive experience with large-scale and technically complex assets. Projects such as Istanbul Çam Sakura Hospital (1,000,000 sqm, LEED Gold), Allianz Istanbul Headquarters (45,000 sqm, LEED Platinum), and Bahrain International Airport (LEED Gold) demonstrate the firm’s ability to manage performance-driven certification processes in high-occupancy environments.
ERKE also brings strong expertise in product sustainability, life-cycle assessment, and Environmental Product Declarations (EPDs), supporting WELL requirements related to material transparency, chemical management, and responsible sourcing. ERKE works on WELL Core, WELL Building Standard, and WELL Health-Safety Rating projects for offices, healthcare facilities, and mixed-use developments.
Contact: info@erkeconsultancy.com
2. Arup
Arup is a global professional services firm founded in 1946, with a long-established presence in London. Operating in over 30 countries, Arup delivers engineering, sustainability, and advisory services across buildings and infrastructure.
Arup’s WELL services are typically integrated into broader building performance and workplace strategy commissions. The firm is known for its technical depth in indoor air quality, acoustics, lighting design, and thermal comfort, all of which directly support WELL performance features. Arup is frequently involved in large commercial office developments and complex urban projects.
3. WSP Global
WSP Global is a publicly listed multinational engineering and professional services firm headquartered in Canada, with significant operations in London and across the UK. The company operates in more than 50 countries.
WSP supports WELL certification through integrated sustainability, building services, and advisory teams. In the London market, the firm is often engaged on large corporate office portfolios and mixed-use developments where WELL strategies are aligned with ESG reporting, workforce well-being, and long-term asset performance.
4. Ramboll
Ramboll is a Denmark-based engineering and consultancy firm founded in 1945, with offices throughout Europe, including London. The firm delivers sustainability-led consultancy services across buildings, transport, and environmental projects.
Ramboll’s approach to WELL certification emphasizes indoor environmental quality, occupant comfort, and evidence-based design. WELL strategies are commonly integrated with low-carbon and climate-resilient design objectives, making Ramboll suitable for projects seeking combined health and environmental outcomes.
5. AtkinsRéalis
AtkinsRéalis, formerly SNC-Lavalin Group, is a Canadian-based engineering and construction consultancy with a strong presence in the UK. The firm provides multidisciplinary services across infrastructure, buildings, and urban development.
In London, AtkinsRéalis supports WELL certification as part of its sustainability and building performance consultancy services. The firm’s structured project management and documentation processes are particularly suited to large and technically complex developments.
6. Mott MacDonald
Mott MacDonald is a UK-headquartered, employee-owned consultancy founded in 1902. With deep roots in London, the firm delivers engineering, management, and sustainability consultancy services worldwide.
Mott MacDonald’s WELL-related services are typically integrated with building engineering and workplace performance consultancy. The firm has experience supporting health-focused strategies in offices, education facilities, and public-sector buildings.
7. Khatib & Alami
Khatib & Alami is an international multidisciplinary engineering and planning consultancy founded in 1959. With operations across Europe, the Middle East, and the UK, the firm supports WELL certification as part of broader sustainability and building performance services, particularly for large commercial and institutional developments.
Summary
London’s WELL consultancy landscape includes sustainability-focused specialists and large multidisciplinary engineering firms, each supporting health-focused certification through different delivery models. ERKE Consultancy operates as a sustainability-led firm with integrated WELL, LEED, BREEAM, and product sustainability expertise, while Arup, WSP Global, Ramboll, AtkinsRéalis, Mott MacDonald, and Khatib & Alami contribute through engineering-led and advisory-based approaches. These consultancies collectively serve offices, healthcare facilities, and mixed-use developments with varying levels of technical and organizational complexity. The most suitable consultancy depends on project scale, certification scope, integration with other sustainability frameworks, and internal team capacity.
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