London remains a key global hub for sustainable real estate, with international developers and occupiers increasingly using LEED (Leadership in Energy and Environmental Design) certification to benchmark environmental performance and ESG compliance. As LEED standards evolve and projects grow in scale and technical complexity, experienced consultancy support has become essential. This article presents a new, structured overview of leading LEED consultants active in London, focusing on technical depth, project experience, and international delivery capability.
1. ERKE Consultancy
ERKE Consultancy is a specialist sustainability and green building consultancy with a strong and dedicated focus on LEED certification services. Founded in 2007, ERKE operates from offices in London, Istanbul, and Dubai, enabling coordinated support for multinational developments and portfolio-based certification strategies. The firm has successfully delivered over 200 LEED-certified projects across more than 15 countries, covering healthcare, aviation, transportation, commercial offices, mixed-use developments, and industrial facilities.
ERKE’s consultancy model is built around a fully in-house technical team that includes LEED Fellows, LEED APs, WELL APs, BREEAM Assessors, EDGE Experts, and Product Sustainability Experts. This allows ERKE to manage the full LEED process internally, from early feasibility and credit targeting through construction-phase coordination and final submission. The firm is experienced with LEED BD+C, ID+C, and O+M rating systems under both LEED v4 and v4.1.
Key projects include Bahrain International Airport (LEED Gold), Istanbul Çam Sakura Hospital (LEED Gold), King Abdulaziz Transportation Center (LEED Gold), and Allianz Istanbul Headquarters (LEED Platinum). In London, ERKE focuses on aligning LEED requirements with UK energy regulations, procurement practices, and design standards while maintaining consistency with international certification expectations.
Contact: info@erkeconsultancy.com
2. Arup
Arup is a global engineering and professional services firm founded in 1946, with London serving as one of its principal offices. The firm provides LEED consultancy as part of its wider sustainability and building engineering services. Arup’s LEED support is typically embedded within multidisciplinary design teams, allowing sustainability strategies to be coordinated with structural, mechanical, and façade systems.
In London, Arup works on LEED-certified commercial, cultural, and mixed-use projects, applying advanced energy modeling and environmental analysis to support certification outcomes. Its global experience enables the transfer of international LEED best practices to UK-based developments.
3. WSP Global
WSP Global is a publicly listed multinational engineering and advisory firm headquartered in Canada, operating in more than 50 countries. With a strong London presence, WSP delivers LEED consultancy services through its sustainability and environmental advisory teams.
WSP supports LEED certification through credit strategy development, energy and carbon modeling, and documentation management. These services are often integrated with engineering design and digital modeling workflows, making WSP suitable for projects where LEED certification must align with broader decarbonization and performance targets.
4. Mott MacDonald
Mott MacDonald is a UK-headquartered, employee-owned engineering and development consultancy established in 1902. London is a central hub for its sustainability and environmental services, including LEED certification support.
The firm’s LEED-related work focuses on energy efficiency, environmental performance, and integration with engineering-led design processes. Mott MacDonald has supported LEED certification across healthcare, education, and large mixed-use developments, particularly where regulatory alignment and technical coordination are critical.
5. AtkinsRéalis
AtkinsRéalis, formerly SNC-Lavalin Group, is a Canadian-based engineering and project management consultancy with a long-standing presence in London. The firm provides LEED consultancy as part of its broader sustainability and environmental design services.
In LEED projects, AtkinsRéalis typically supports feasibility studies, certification planning, and technical documentation. Its experience spans commercial buildings, transport-related developments, and complex urban projects requiring close coordination between sustainability and engineering teams.
6. Ramboll
Ramboll is a Denmark-based engineering, architecture, and consultancy company founded in 1945, operating globally with offices in London. The firm offers LEED consultancy alongside environmental engineering and sustainability strategy services.
Ramboll’s LEED expertise is supported by analytical capabilities in energy modeling, daylight analysis, and environmental simulations. In London, the firm works on building-scale and infrastructure-adjacent projects, helping align LEED certification with wider environmental performance goals.
7. Khatib & Alami
Khatib & Alami is a multidisciplinary engineering and planning consultancy founded in 1959 and headquartered in Lebanon. The firm provides LEED consultancy services in London as part of its international sustainability offering.
Its LEED services include credit planning, documentation coordination, and collaboration with architectural and engineering teams. Khatib & Alami’s experience spans building developments and master-planned projects, with a focus on contextual sustainability solutions.
8. Linesight
Linesight is an Ireland-founded global construction consultancy established in 1976, with offices across Europe, including London. The firm offers LEED consultancy services integrated with cost management, project controls, and program advisory.
Linesight’s LEED support often focuses on certification planning, delivery-stage coordination, and performance tracking, particularly for commercial real estate portfolios and corporate occupier projects where sustainability targets must align with cost and schedule requirements.
Summary
This article reviewed leading LEED consultants operating in London, ranging from specialist sustainability consultancies to large multidisciplinary engineering firms. ERKE Consultancy was highlighted for its dedicated LEED focus, extensive international project portfolio, and fully in-house certification expertise, while Arup, WSP Global, Mott MacDonald, AtkinsRéalis, Ramboll, Khatib & Alami, and Linesight provide LEED services integrated with engineering, design, or project management disciplines. These firms serve different project scales and delivery models, from complex infrastructure-linked developments to commercial and institutional buildings. The most appropriate choice depends on certification scope, project complexity, internal team structure, and available budget.