Turn this list into pipeline.
ESG Consulting Companies in the UK: 500+ Active Firms (2026)
ESG consulting companies advise organisations on environmental, social and governance strategy, reporting and compliance across the UK.
Buying centres tend to sit with sustainability, finance, risk, procurement and board-level governance teams rather than a single owner. Work is usually sold to corporate, public sector and regulated-market clients that need structured assessment, reporting support and implementation capacity. Engagements range from discrete materiality or climate-risk reviews to retained advisory programmes spanning operations, supplier oversight and management reporting. The better-fit firms look like professional-services businesses: UK delivery teams, sector specialists, consulting methods that can survive client scrutiny, and reporting processes that turn policy language into auditable actions.
Read more
The UK cohort contains 503 actively trading ESG consulting firms, giving researchers a relatively focused market rather than a broad catch-all sustainability universe. Reported headcount across the cohort is 1,326 people, which points to a labour-intensive advisory model with a sizeable long tail of small practices. Only 39 firms have turnover above £5M, so most providers sit below the scale usually associated with national framework coverage or multi-practice consulting depth. That shape matters for buyers comparing specialist advisory capacity with larger professional-services alternatives.
Governance work sits inside broader professional-services risk rather than a single sector licence. For corporate, public sector and regulated-market buyers, procurement often tests methodology, independence and evidence handling as much as sector expertise. Climate-risk and reporting assignments also tend to bring consultants close to board papers, supplier assessments and internal control processes, where loose claims can create client risk. The market therefore rewards firms that can document assumptions, maintain clear separation between advice and assurance-style review, and translate ESG commitments into operating procedures that finance, risk and procurement teams can use.
Demand appears to be splitting between strategic advisory work and more repeatable reporting support. The long tail of small practices should remain relevant where clients need sector knowledge, local delivery or project-based capacity, while scaled providers are better placed to handle multi-site programmes and regulated-market procurement. Margin pressure is likely where reporting work becomes templated or software-supported, pushing consultancies towards climate-risk interpretation, governance change and supplier oversight. Consolidation remains plausible, but the category also lends itself to specialist boutiques because credibility often comes from practitioner experience rather than breadth alone.
503
Active firms
2026
39
Above £5M
reported revenue
41
Recent incorporations
since 2022
Key facts
About 7% of the trading cohort reports turnover above £5M (39 of 503 firms) — the rest sits below that revenue band.
8% of the cohort was incorporated since 2022 (41 firms), so a sizeable share is in its first few filing cycles.
ESG consulting sits between corporate reporting, risk management and procurement, which makes buying decisions cross-functional rather than purely sustainability-led.
Common advisory work includes interpreting disclosure requirements, measuring operational impacts and evidencing governance controls to investors, customers and lenders.
The same ESG consulting label can cover advisory employers, specialist consultancies and asset-light corporate vehicles built around project delivery or reporting support.
Revenue and headcount can diverge in this market, pointing to partnership-led delivery, subcontracted expertise or group structures rather than one operating model.
Top UK ESG consulting companies
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability consulting and digital tools to businesses and investors. Services include ESG strategy, carbon and net‑zero planning, environmental management, supply chain sustainability,…
Serves businesses, investors and public-sector organisations with sustainability needs, including agribusiness, apparel, financial services, food systems, health and pharmaceuticals, power and…
Financial Health
StrongStrong
Location
Simply Sustainable Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides ESG and sustainability consultancy services including strategy development, carbon footprinting, net‑zero target setting, climate risk management, regulatory reporting support (e.g., CSRD,…
Serves corporate ESG and sustainability leaders across built environment, finance, food and beverage, hospitality, manufacturing, pharmaceuticals, professional services, retail, technology, media,…
Financial Health
StableStable · Hiring · 35% CAGR over 4y
Location
Provides sustainability and ESG consulting services to businesses and investors, including decarbonisation and net‑zero strategy, environmental management, responsible sourcing, impact measurement,…
Serves large businesses, private equity investors and public-sector organisations seeking sustainability support, across sectors including agribusiness, apparel, financial services, food, health and…
Location
PHOENIX CONSULTING SPECIALISTS LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides consulting services on environmental, social and governance (ESG) strategy and sustainability reporting. Advises organisations on net‑zero and decarbonisation planning, carbon accounting,…
Serves large enterprises and Fortune 500 companies worldwide, including boards, sustainability teams, finance/reporting leaders and investor-relations stakeholders focused on ESG, climate and…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
Progressive Acceleration Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides sustainability consulting and digital tools for organisations, including ESG strategy, carbon accounting and net‑zero planning, environmental management, responsible sourcing, sustainable…
Serves businesses, investors and public-sector organisations in sectors including agribusiness, apparel, financial services, food, healthcare, utilities, property, retail, technology and private…
Financial Health
WeakWeak
Location
Provides sustainability and ESG consulting services to businesses and organisations, including carbon accounting and decarbonisation strategies, environmental management, supply chain sustainability,…
Serves businesses, investors and public-sector organisations in agribusiness, apparel, financial services, food, health, utilities, property, retail, technology and private equity.
Location
Orbis Advisory LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides business consulting services focused on sustainability and ESG. Advises organisations on strategy implementation, measurement and reporting, regulatory compliance, climate and sustainability…
Serves B2B organisations, private equity firms and portfolio companies with sustainability, ESG, climate risk and reporting needs across operations, assets, value chains and investments.
Financial Health
HealthyHealthy · -13% CAGR over 2y
Location
Provides sustainability consulting and digital solutions for businesses and investors, including ESG strategy, decarbonisation and net-zero planning, environmental management, supply chain…
Serves businesses, investors and public-sector organisations in agribusiness, apparel, finance, food, health/pharma, energy, property, retail, technology and private equity seeking sustainability…
Location
PNZ ADVISORY LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides sustainability and carbon advisory services, including corporate carbon accounting, product carbon footprinting, net‑zero strategy development, ESG reporting, regulatory compliance support,…
Serves large organisations, brands, and corporate sustainability, ESG, finance and compliance teams with regulatory reporting obligations or supply-chain carbon requirements.
Financial Health
StableStable · -7% CAGR over 2y
Location
Brodie Consulting Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides sustainability and responsible business consultancy services, advising organisations on ESG strategy, materiality assessments, climate transition planning, regulatory compliance, stakeholder…
Serves businesses, brands and organisations needing sustainability, ESG, responsible business and supply chain support, including senior leaders, employees, suppliers and customers involved in…
Financial Health
StableStable · Hiring · 26% CAGR over 2y
Location
Blue Planet Consulting Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability and ESG strategy advisory services to organisations. Supports development and implementation of ESG strategies, risk assessment and reporting, and advises on areas including…
Serves senior leaders and executive teams in businesses of any size and sector that need to address sustainability and ESG expectations from investors, customers, lenders, insurers, regulators, NGOs…
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
Location
Morelli Consulting Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability and ESG consulting services to businesses, including sustainability strategy development, impact measurement, compliance and reporting support, and stakeholder communication.…
Serves businesses and corporate sustainability or ESG teams worldwide, including organisations seeking external expertise on sustainability strategy, reporting, impact measurement and stakeholder…
Financial Health
HealthyHealthy · Hiring · 28% CAGR over 4y
Location
THE GOOD ECONOMY PARTNERSHIP LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides impact and ESG advisory services to investors, businesses and public bodies, including strategy development, impact measurement and management systems, sustainability and impact reporting,…
Serves B2B, public-sector and social-sector organisations, with a focus on private markets investors, housing providers, commercial real estate firms, private equity/debt investors and…
Financial Health
StableStable · Hiring · 20% CAGR over 2y
Location
CAUSEWAY CONNECT LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides ESG consulting and sustainability reporting services for businesses, including carbon footprint analysis, materiality assessments, B Corp certification support, supply chain ESG audits, and…
Serves SMEs and large corporations seeking ESG support, with sector-specific offerings for schools, construction firms and hotels, plus businesses facing sustainability reporting, supply chain ESG,…
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
Action Sustainability (trading)
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability consultancy, training programmes and digital measurement tools that help organisations manage ESG performance. Services include carbon and climate assessments, sustainable…
Serves B2B organisations across construction, education, energy, financial services, FMCG, healthcare, manufacturing, transport and utilities, especially ESG, procurement and supply-chain leaders.
Financial Health
StrongStrong · Hiring · 28% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability consulting services including life cycle assessment, product environmental declarations, carbon and water footprint analysis, ESG and sustainability reporting, net‑zero and…
Serves businesses and corporate sustainability teams across packaging, energy, logistics, retail, finance, healthcare, chemicals, automotive, agriculture, textiles, construction and metals sectors.
Financial Health
HealthyHealthy · Hiring · 19% CAGR over 4y
Location
ERM
Provides sustainability and environmental consulting and advisory services to businesses and investors, including climate and net‑zero strategy, environmental, health and safety management, due…
Serves businesses, investors and public-sector organisations seeking sustainability, ESG and risk advice, especially large organisations in chemicals, financial services, manufacturing, mining, oil…
Location
Inspired
Provides energy and sustainability consultancy to commercial, industrial and public sector organisations, including energy procurement and management, carbon reduction and net‑zero strategy, ESG and…
Serves UK commercial, industrial and public sector organisations, including manufacturing, hospitality, retail, property, transport and logistics, FTSE/AIM-listed firms, and leaders in finance,…
Location
Provides sustainability and environmental consultancy services including advisory, planning, engineering and technical assessment. Supports organisations with climate strategy, energy transition,…
Serves businesses and public-sector organisations facing sustainability challenges, including clients in energy, mining, finance, industry and technology, government and infrastructure, and the built…
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides ESG and sustainability advisory and data platform services for private market investors and portfolio companies, including responsible investment data collection, emissions calculations,…
Serves private market investors and their portfolio companies, including fund managers, LP-facing teams, deal teams, boards and in-house sustainability leads seeking ESG, responsible investment and…
Financial Health
StrongStrong · Hiring · 100% CAGR over 3y
Location
Digital Shift Consultancy Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability and ESG consulting for businesses, including net zero and SBTi advisory, B Corp certification support, sustainability strategy development, materiality assessments,…
Serves businesses seeking ESG, net zero, B Corp and sustainable supply chain support, particularly organisations needing sustainability reporting, materiality assessments and environmental impact…
Financial Health
StableStable · Hiring · 3% CAGR over 4y
Location
CITYREGEN LEICESTER LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability and ESG consulting services, including carbon accounting, strategy development, data analytics and reporting. Advises organisations on net‑zero transition, supply chain…
Serves organisations across sectors, including corporations, investors, governments and communities, with ESG, carbon accounting and sustainability-transition needs.
Financial Health
HealthyHealthy · -68% CAGR over 4y
Location
Acclaro Advisory Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability and ESG advisory services to businesses, including carbon footprinting, net zero strategy development, climate risk assessment, Scope 3 emissions reporting, ESG governance…
Serves B2B organisations, including leadership, sustainability, ESG, finance and compliance teams, that need support with net zero, climate risk, supplier engagement and sustainability reporting…
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 4y
Location
WALKER RESOURCE MANAGEMENT LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides environmental and sustainability consultancy services including investment due diligence, environmental permitting, waste strategy, ESG advisory, carbon footprinting, life cycle assessment,…
Serves public and private sector organisations in healthcare, energy, waste and recycling, local authorities, manufacturing and professional services, including investors, regulated operators and…
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 4y
Location
Provides sustainability and environmental consulting services, including advisory, planning and assessment, engineering and design, and environmental sciences. Supports organisations with climate…
Serves businesses and public-sector organisations in energy, mining, finance, industry and technology, government and infrastructure, and the built environment facing sustainability challenges.
Location
Considerate Hoteliers Limited
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability and ESG consultancy for the hospitality and tourism sectors. Services include energy assessments, carbon reporting, decarbonisation strategies, ESG data management through the…
Serves B2B customers in the hospitality and tourism sectors, especially hotels, hotel groups and tourism businesses worldwide, plus related real estate, finance and investment stakeholders.
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 3y
Location
ASESORIA GROUP LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides consultancy and advisory services on environmental, social and governance (ESG), sustainability strategy, corporate governance, leadership development, and social value programmes, offering…
Targets businesses and other organisations of all sizes seeking support with corporate sustainability, ESG, governance, leadership development and social value across multiple industries.
Financial Health
DistressedDistressed · -16% CAGR over 3y
Location
CONTENT ED NET (LONDON) LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides ESG and sustainability consulting services, including strategy development, compliance and reporting guidance, supply chain risk and carbon assessment, and coaching programmes to help…
Serves B2B organisations facing ESG and sustainability scrutiny from investors, lenders, regulators and clients, especially companies needing to meet tender requirements, supply-chain demands and…
Financial Health
StableStable · Hiring · 22% CAGR over 2y
Location
Antea Group UK Limited
Trajectory
2y · 2025–NowFinancial sub-scores
Computed from 2 filingsProvides environmental, health and safety (EHS) and sustainability consulting services. Advises organisations on environmental planning, ESG strategy, regulatory compliance, risk assessment, and…
Serves businesses and public-sector organisations, including manufacturers, global energy companies, national governments and local municipalities needing EHS and sustainability support.
Financial Health
StrongStrong · Growing, Hiring · 84% CAGR over 1y
Location
Transformacy Group Ltd
Trajectory
1y · 2025–NowProvides business consulting on corporate sustainability and ESG. Services include sustainability strategy development, ESG and sustainability reporting, social value strategies for public sector…
Serves businesses pursuing ESG, sustainability reporting and certifications, including suppliers bidding for UK public sector contracts requiring social value commitments.
Financial Health
Insufficient historyInsufficient history
Location
Positive Planet Eco Technology Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides sustainability consultancy services including carbon footprint measurement, life cycle assessments, ESG reporting support, net‑zero strategy development, emissions reduction planning, and…
Serves UK businesses and not-for-profit organisations across sectors including construction, financial services, technology, professional services, marketing, hospitality, healthcare and events.
Financial Health
StableStable · Hiring · 180% CAGR over 3y
Location
Slr Environmental Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides environmental and sustainability consulting services including strategic advisory, planning and assessment, engineering design, and environmental sciences support. Advises organisations on…
Serves businesses and public-sector organisations in energy, mining, finance, industry and technology, government and infrastructure, and the built environment facing sustainability and environmental…
Financial Health
WeakWeak · -16% CAGR over 4y
Location
Eco3 Partnership Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides environmental and sustainability consulting focused on net‑zero strategies. Offers carbon and energy data management software, emissions reporting (Scope 1–3), ESG compliance support, and…
Serves businesses and other organisations in the UK and internationally, especially those with asset portfolios, supply chains, buildings, transport, energy, water and waste impacts.
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 5y
Location
Suss Housing Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides environmental sustainability assessment and consultancy for the housing sector, including the SHIFT Sustainability Standard. Offers ESG reporting, SECR and ESOS compliance support, EPC/SAP…
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 4y
Location
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides sustainability and climate strategy consulting for businesses, including ESG assessments, environmental inventories, climate risk analysis, science‑based target setting, sustainability and…
Serves businesses and organisational leaders, including sustainability and finance teams, in sectors such as financial services, data, technology and nonprofits facing ESG reporting, climate-risk and…
Financial Health
StrongStrong · Hiring · 88% CAGR over 3y
Location
Envision Sustainability Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability consultancy for real estate and construction projects, including environmental certification (BREEAM, WELL), ESG reporting, net‑zero advisory, operational energy analysis, MEP…
Serves real estate investors, asset owners/operators, developers, design teams and contractors across the built environment, from individuals to listed development companies involved in property…
Financial Health
StrongStrong · Growing, Hiring · 33% CAGR over 4y
Location
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides management consulting on responsible sourcing and supply chains, including social and environmental risk assessments, human rights due diligence, ESG diagnostics, and development of…
Serves businesses and investors with global supply chains, particularly in mining and metals, agriculture, fashion and textiles, automotive and manufacturing, energy and infrastructure, and financial…
Financial Health
HealthyHealthy · -63% CAGR over 4y
Location
ENERGISE LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides sustainability and energy consultancy services to organisations, including carbon footprint assessments, net zero strategy development, life cycle analysis, supply chain decarbonisation,…
Serves UK organisations and businesses, including SMEs and firms with investor, regulator, customer or board sustainability requirements, across sectors seeking net zero, energy efficiency,…
Financial Health
WeakWeak · Hiring · 34% CAGR over 2y
Location
Tunley Environmental Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability consulting and environmental assessment services. Conducts carbon footprinting, lifecycle and embodied carbon assessments, biodiversity and water footprint analysis, and…
Serves B2B organisations worldwide, especially airports, architects and developers, construction, manufacturing, chemicals and cleaning, mining and steel, pharmaceuticals and medical devices, ports,…
Financial Health
StrongStrong · Growing, Hiring · 50% CAGR over 4y
Location
Lifeproven Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides ESG and sustainability consultancy for the real estate sector, including portfolio ESG analysis, reporting and data management, net‑zero and carbon assessments, and project and cost…
Serves B2B real estate investment managers, asset managers, funds, developers and built-environment supply chains across UK and EU portfolios, including BTR, co-living, commercial, life sciences and…
Financial Health
HealthyHealthy · Hiring · 38% CAGR over 4y
Location
EPINDEX LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability consulting and digital tools to help companies and their suppliers improve environmental performance and meet sustainable supply chain requirements, including supplier…
Serves global blue-chip companies, procurement and sustainability teams, and their supplier networks, including businesses seeking to meet sustainable supply chain requirements and improve…
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
Greenheart Business Consulting Limited
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability and ESG consulting to businesses, including sustainable business strategy development, B Corp certification support, materiality assessments, carbon footprint analysis, net…
Serves B2B clients, particularly forward-thinking brands and companies with sustainability, legal and leadership teams seeking support on ESG, climate, B Corp and responsible business priorities.
Financial Health
StableStable · Hiring · 22% CAGR over 4y
Location
BEYONDLY GLOBAL LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides environmental compliance schemes and sustainability consultancy for businesses, including packaging, WEEE and batteries compliance, environmental data management, carbon management, ESG and…
Serves businesses with environmental compliance and sustainability obligations, including producers, retailers and organisations managing packaging, WEEE, batteries, carbon reporting, ESG and…
Financial Health
StrongStrong · Hiring · 14% CAGR over 2y
Location
Avon Energy Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides carbon management and sustainability consultancy, including greenhouse gas emissions inventories, product carbon footprinting, decarbonisation strategies, transition planning, and regulatory…
Serves organisations from start-ups to multinational corporations with climate programmes, carbon reporting obligations, net-zero transition plans and emissions management needs, including teams…
Financial Health
StableStable · 0% CAGR over 2y
Location
Hope Solutions Services Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides sustainability consulting for the music, media and live events industries, including ESG strategy, carbon and environmental impact measurement, net‑zero planning, sustainability…
Sells to businesses and organisations in the music, live events, media, entertainment and broadcast sectors, including artists, event operators and industry supply-chain partners.
Financial Health
StrongStrong · Hiring · 12% CAGR over 2y
Location
Ricardo
Provides environmental, engineering and strategic consultancy services focused on transport, energy and climate. Advises governments and industries on policy, technology, decarbonisation, mobility,…
Serves B2B and public-sector clients globally across transport, energy, environment and climate markets, including government bodies, automotive and aerospace firms, utilities, manufacturers,…
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides climate finance and sustainability consultancy services, advising governments, investors and organisations on low‑carbon and climate‑resilient development, investment design, risk analysis,…
Serves organisations and investors working on climate finance and low-carbon, climate-resilient development across sectors including agriculture, banking, built environment, energy, forestry, health,…
Financial Health
StrongStrong · Growing, Hiring · 16% CAGR over 4y
Location
TBL SERVICES LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides sustainability consulting services including carbon accounting, net‑zero strategy development, sustainability reporting, and compliance with standards such as CDP and EcoVadis. Also advises…
Serves B2B organisations with sustainability and ESG reporting requirements, especially companies managing supply chain emissions, net-zero targets, and compliance with standards such as EcoVadis,…
Financial Health
StrongStrong · -5% CAGR over 2y
Location
EARTH ACTIVE LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides environmental, social and governance (ESG) advisory services for investors and financial institutions. Conducts environmental and social risk assessments, impact and governance advisory,…
Serves development finance institutions, commercial banks and private equity organisations investing globally, especially in emerging markets, across sectors such as infrastructure, energy,…
Financial Health
HealthyHealthy · Hiring · 22% CAGR over 4y
Location
SUSTAINIT SOLUTIONS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides sustainability and ESG data consultancy, including collection, mapping and analysis of environmental, health, safety and governance data. Advises on and manages EHS and ESG software systems,…
Serves B2B organisations of all sizes, from SMEs to global FTSE 500 corporates, targeting sustainability, ESG, EHS, procurement and reporting teams needing support with non-financial data and…
Financial Health
StableStable · Hiring · 16% CAGR over 4y
Location
Unlock all 503 leads
Showing 50 of 503 — +453 more with verified decision-maker contacts, live data, and CRM sync.
How UK ESG consulting companies work and how to sell to them
What they do
ESG consultancies earn mainly through project fees, day-rate delivery and retained advisory arrangements. The work is a professional-services sale rather than a software licence: assessment, evidence gathering, policy drafting, management reporting, supplier review and change support. Pricing usually depends on scope, seniority and client complexity, with discrete reviews bought as fixed-fee projects and longer programmes handled through retainers or phased statements of work. Some firms add repeatable templates, benchmarks or reporting processes, but the core margin still comes from consultant utilisation and the ability to turn uncertain requirements into defensible client decisions.
Who they sell to
Most buyers are corporate, public sector and regulated-market organisations that need help converting ESG commitments into operating practice. The buying group typically includes sustainability leads, finance teams, risk owners, procurement and board-level governance stakeholders, so sales cycles can involve both technical scrutiny and internal consensus. Smaller assignments may be bought directly by a functional owner, while retained or multi-site work tends to pass through procurement checks, preferred-supplier lists or RFP-style evaluation. Buyers usually look for sector familiarity, credible methods, clear deliverables and evidence that the consulting team can work with finance, operations and risk rather than only policy teams.
What they buy
Most ESG consulting firms tend to spend on the machinery of advisory delivery: CRM, proposal management, project accounting, resource planning, knowledge management, document control and secure client portals. Reporting work also creates demand for data collection tools, analytics, carbon and supplier-assessment systems, workflow automation and quality-control processes that keep assumptions traceable. As people businesses, they also buy recruitment support, learning and development, HR systems, payroll, professional indemnity cover, legal advice and specialist marketing. Smaller practices may prefer lightweight tools that reduce administration, while scaled providers are more likely to need integration across finance, delivery, pipeline and client evidence handling.
Why and how to sell to them
Buying triggers tend to appear when ESG consultancies outgrow founder-led delivery, win larger procurement-led clients, add sector practices or need to standardise reporting work across more consultants. Margin pressure can also create intent, especially where repeatable reporting support competes with software-supported client teams. Outbound messages usually land better when they attach to utilisation, proposal conversion, evidence quality, consultant onboarding or risk control rather than abstract sustainability language. These buyers are accustomed to judging claims, so proof points should be concrete: shorter review cycles, cleaner audit trails, fewer manual handovers, clearer responsibility between advisory teams and client stakeholders, or better visibility over project profitability.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
Related directories
Frequently asked questions
How many ESG consulting companies are there in the UK?↓
What counts as a ESG consulting company in this list?↓
Which are the largest ESG consulting companies in the UK?↓
What do ESG consulting companies in the UK actually do?↓
How does UK ESG consulting compare internationally?↓
How is this list built and how fresh is the data?↓
How big are the typical ESG consulting companies in the UK?↓
Are these mostly new or established ESG consulting companies?↓
What SIC codes does this use?↓
What buying signals should I look for?↓
Push these 503 companies into your pipeline.
Find the right decision-makers, see verified company data, and export your list in seconds.