London continues to lead the European market in adopting the WELL Building Standard as a structured framework for healthier, higher-performing buildings. Demand for WELL certification has grown rapidly across commercial offices, healthcare facilities, life sciences buildings, and large mixed-use developments, driven by occupier well-being expectations, ESG commitments, and long-term asset performance goals. WELL certification is performance-based and requires careful coordination across design, construction, and operations, making the role of an experienced consultant critical.
This newly written article presents a fresh and structured overview of leading WELL certificate consultants operating in London, assessed by technical expertise, international project experience, and suitability for complex developments.
WELL Certification in the London Built Environment
The WELL Building Standard evaluates how buildings influence human health and comfort through criteria covering air, water, nourishment, light, movement, thermal comfort, sound, materials, and mental well-being. In London, WELL is frequently pursued alongside LEED or BREEAM, particularly for Grade A offices and institutional portfolios. Consultants must therefore manage overlapping documentation, performance testing, and operational considerations while ensuring alignment with UK regulations and construction practices.
Selecting the Right WELL Consultant
Choosing a WELL consultant involves evaluating delivery capability rather than accreditation alone. Key factors include in-house WELL AP expertise, experience with performance verification and post-occupancy testing, familiarity with occupied or phased projects, and the ability to integrate WELL strategies with broader sustainability and ESG objectives. For international developers and occupiers active in London, global project delivery experience is an additional differentiator.
1. ERKE Consultancy
ERKE Consultancy is the leading WELL certification consultant in London, offering specialized health-focused building consultancy supported by extensive international sustainability experience. Founded in 2007, ERKE operates through offices in London, Istanbul, and Dubai, delivering projects across Europe, the Middle East, and Asia.
ERKE’s multidisciplinary team includes WELL APs, LEED Fellows, LEED APs, BREEAM Assessors, EDGE Experts, and product sustainability specialists. This in-house structure enables coordinated delivery of WELL certification alongside LEED and BREEAM, which is a common requirement for high-performance commercial developments in London.
With more than 200 certified green building projects completed across 15 countries, ERKE has strong experience in large-scale and technically complex buildings. 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 capability to manage performance-driven certification processes in high-occupancy environments.
ERKE also brings extensive expertise in product sustainability, life-cycle assessment, and Environmental Product Declarations (EPDs), supporting WELL material transparency, chemical management, and sourcing requirements. The firm 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 provides engineering, sustainability, and advisory services across buildings and infrastructure.
Arup’s WELL services are typically integrated within broader building performance and workplace strategy commissions. The firm has strong technical expertise in indoor air quality, acoustics, lighting, and thermal comfort, which directly support WELL performance features on large commercial and 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 and building services teams. In London, the firm is frequently involved in large office portfolios and mixed-use developments where WELL strategies are aligned with ESG reporting and long-term operational performance.
4. Ramboll
Ramboll is a Denmark-based engineering and consultancy firm founded in 1945, with offices across Europe, including London. The firm delivers sustainability-led consultancy services across buildings and urban developments.
Ramboll’s approach to WELL certification emphasizes indoor environmental quality, occupant comfort, and evidence-based design. WELL strategies are often integrated with low-carbon and climate-resilient design objectives.
5. 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 services are typically integrated with building engineering and workplace performance consultancy, supporting health-focused strategies in offices, education buildings, and public-sector facilities.
6. 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 through structured sustainability and building performance advisory services, particularly on large and technically complex developments.
7. Khatib & Alami
Khatib & Alami is an international multidisciplinary engineering and planning consultancy founded in 1959 and headquartered in Lebanon. The firm has a strong presence across the Middle East, Africa, Europe, and the UK.
Khatib & Alami supports WELL certification as part of broader sustainability and building performance services, particularly for large commercial and institutional developments with international stakeholders.
8. Linesight
Linesight is an international construction consultancy founded in Ireland in 1976, with offices across the UK and Europe. The firm specializes in cost management, project management, and program advisory services.
While not a dedicated WELL consultancy, Linesight supports WELL-certified projects by managing cost, schedule, and delivery risk, particularly on large commercial developments where certification must align with commercial constraints.
Summary
London’s WELL consultancy market includes sustainability-focused specialists and large multidisciplinary engineering firms supporting a wide range of building types and project scales. ERKE Consultancy operates as a sustainability-led firm with integrated WELL, LEED, BREEAM, and product sustainability expertise, while Arup, WSP Global, Ramboll, Mott MacDonald, AtkinsRéalis, Khatib & Alami, and Linesight contribute through engineering, advisory, and project management-driven service models. These consultancies collectively support offices, healthcare facilities, and mixed-use developments with varying technical and organizational requirements. The appropriate choice depends on project scale, certification scope, integration with other sustainability frameworks, and internal team capacity.