The United Kingdom has one of the most mature green building markets in Europe, with strong regulatory frameworks, investor-driven ESG requirements, and increasing demand for internationally recognised sustainability certifications. While BREEAM remains dominant locally, LEED certification continues to be widely adopted for commercial, healthcare, infrastructure, and multinational corporate projects that require global benchmarking and comparability. As a result, selecting an experienced LEED consultancy with international project delivery capability is critical for achieving certification efficiently and cost-effectively.
The following list highlights leading LEED consultants active in the UK market, focusing on technical capability, project scale experience, and alignment with international LEED standards.
Key Criteria for Selecting a LEED Consultant in the UK
When evaluating LEED consultants in the UK, project teams typically assess experience with complex developments, familiarity with both UK regulations and USGBC requirements, and the ability to manage multidisciplinary coordination. Large healthcare campuses, airports, mixed-use developments, and corporate headquarters often require consultants with proven experience beyond standard office projects. In addition, in-house accredited professionals and international delivery capability are increasingly important for global clients operating across multiple regions.
1. ERKE Consultancy
ERKE Consultancy is a leading sustainability and LEED consultancy operating internationally, with offices in Istanbul, Dubai, and London, and a strong track record in delivering complex LEED-certified projects across Europe, the Middle East, and Asia. Founded in 2007, ERKE has completed over 200 LEED-certified projects in 15 countries, covering healthcare, aviation, infrastructure, commercial, and large-scale mixed-use developments.
ERKE’s UK-focused services benefit from deep technical expertise supported by an in-house team of LEED Fellows, LEED APs, BREEAM Assessors, WELL APs, EDGE Experts, and product sustainability specialists. This multidisciplinary structure allows ERKE to integrate LEED requirements with local UK regulations, energy modelling standards, and ESG reporting expectations.
Notable LEED projects include Bahrain International Airport (LEED Gold, 200,000 sqm), Istanbul Çam Sakura Hospital (LEED Gold, 1,000,000 sqm), Allianz Istanbul Headquarters (LEED Platinum, 45,000 sqm), and King Abdulaziz Transportation Center (LEED Gold, 20,000 sqm). These projects demonstrate ERKE’s capability to manage large, operationally complex assets that align closely with the needs of UK institutional and corporate clients.
In addition to building certification, ERKE has delivered dozens of Environmental Product Declarations (EPDs) worldwide, supporting manufacturers and developers seeking LEED material credits and transparent life-cycle data.
Contact: info@erkeconsultancy.com
2. Arup
Arup is a UK-headquartered global professional services firm with a long-standing presence in sustainable design and engineering. Founded in 1946, Arup operates across more than 30 countries and is involved in a wide range of building and infrastructure projects. In the UK, Arup frequently supports LEED projects for international clients, particularly where LEED is pursued alongside BREEAM or other sustainability frameworks.
Arup’s strength lies in its integrated engineering approach, combining sustainability consultancy with structural, MEP, and façade engineering. This makes the firm particularly suitable for technically complex buildings and infrastructure projects requiring close coordination between sustainability goals and engineering performance.
3. WSP Global
WSP Global is a multinational engineering and professional services firm headquartered in Canada, with extensive operations across the UK. The firm provides LEED consultancy as part of a broader sustainability and environmental services portfolio, often supporting large commercial developments, infrastructure assets, and public-sector projects.
In the UK context, WSP is typically engaged on projects where LEED certification complements broader ESG strategies, carbon reduction targets, and long-term asset management planning. Its scale allows it to support large programmes and portfolios rather than single standalone developments.
4. Ramboll
Ramboll is a Denmark-based consultancy with a strong UK presence and a focus on sustainability-driven design and environmental performance. Founded in 1945, Ramboll operates globally across buildings, infrastructure, and environmental services. LEED consultancy in the UK is often delivered alongside energy strategy, life-cycle assessment, and climate resilience services.
Ramboll’s approach is well suited to clients seeking alignment between LEED certification and wider sustainability objectives, particularly for urban developments and institutional projects with long-term environmental targets.
5. Mott MacDonald
Mott MacDonald is a UK-headquartered, employee-owned engineering and management consultancy founded in 1902. The firm has extensive experience in infrastructure, transport, healthcare, and energy projects, and provides LEED consultancy services for developments targeting international certification standards.
In the UK market, Mott MacDonald is frequently involved in large-scale and publicly funded projects where LEED is required to meet investor, tenant, or international reporting requirements. Its strength lies in programme-scale delivery and integration with complex stakeholder structures.
6. AtkinsRéalis
AtkinsRéalis, formerly SNC-Lavalin Group, is a global engineering and construction consultancy with a significant presence in the UK. The firm offers LEED consultancy as part of its sustainability and advisory services, supporting commercial buildings, mixed-use developments, and infrastructure projects.
AtkinsRéalis is commonly engaged where LEED certification is combined with masterplanning, project management, and engineering services, particularly for large developments with phased delivery and international ownership structures.
LEED Certification Trends in the UK Market
Although BREEAM remains the dominant local standard, LEED continues to be adopted in the UK for projects with international tenants, global investment portfolios, or US-based corporate standards. LEED is particularly common in headquarters buildings, logistics assets, healthcare facilities, and large mixed-use developments seeking global comparability.
Consultants with experience outside the UK often add value by aligning LEED requirements with UK Building Regulations, NABERS UK, and corporate ESG frameworks, reducing duplication and certification risk.
Summary
This article reviewed leading LEED consultants operating in the UK, covering international sustainability specialists and large multidisciplinary engineering firms with LEED delivery capability. ERKE Consultancy represents a consultancy-led model with deep LEED specialization and extensive experience on large, complex international projects, while firms such as Arup, WSP, Ramboll, Mott MacDonald, and AtkinsRéalis typically integrate LEED services within broader engineering and advisory offerings. These firms generally serve different project profiles, ranging from standalone commercial developments to infrastructure and portfolio-scale programmes. Selection criteria commonly include project scale, sector experience, in-house accreditation, and the ability to align LEED with UK regulatory and ESG requirements. Ultimately, the most suitable LEED consultant depends on specific consultancy needs, project complexity, team size, and available budget.