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Environmental Consulting Companies in Birmingham: 38 Active Firms (2026)
Environmental consulting companies advise on permits, waste, water, flood risk and sustainability impacts across Birmingham’s metropolitan economy.
Buying centres tend to sit with property and infrastructure teams, environmental compliance leads, sustainability functions and public-sector estates managers rather than a single central budget. Buyers are mainly commercial, infrastructure, property, industrial and public-sector organisations across Birmingham and the surrounding metropolitan area, with work commissioned as technical advisory rather than software or outsourcing. Engagements range from discrete permit support, drainage reviews and site-risk assessments to retained advice during planning, construction and operational compliance. The better-fit practices look multidisciplinary, combining technical, risk, analytics and strategic advisory work for mid-market clients with regulated environmental exposure.
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Birmingham has 38 active environmental consulting companies in this list, making it a compact metropolitan cohort rather than a broad professional-services pool. The reported employment footprint is 303 people across the firms with headcount, which points to a market built around small specialist practices with a thinner layer of mid-market consultancies. For researchers, the useful read-across is less total market size than buyer exposure: property, infrastructure, industrial and public-sector clients tend to pull these advisers into permit, flood-risk, drainage and compliance work.
Much of the category is shaped by regulated environmental regimes, even though environmental consulting itself is a professional-services category rather than a licensed activity. GOV.UK guidance from the Environment Agency and Defra says organisations may need an environmental permit or licence for activities that could pollute air, water or land, increase flood risk, affect land drainage, or abstract or impound water. Permit routes cover installations, waste operations, water discharge and groundwater activities, flood-risk activities, radioactive substances and water abstraction. The Environment Agency handles many of these regimes, while some installation and solvent-emission permits sit with local councils. ISEP, formerly IEMA, provides the professional-body backdrop for sustainability and environmental practitioners.
Demand appears tied to the rhythm of planning, infrastructure delivery, industrial compliance and climate-adaptation work rather than to a narrow discretionary advisory budget. Birmingham practices with multidisciplinary capability should remain useful where clients need permit advice, modelling, evidence packs and ongoing compliance support in the same engagement. Smaller consultancies may continue to defend specialist niches, particularly around local land, drainage and flood-risk knowledge, while mid-market providers tend to benefit when clients want broader coverage across environmental and sustainability questions. Consolidation remains plausible, but the market still looks relationship-led and project-led rather than winner-takes-most.
38
Active firms
2026
6
Above £5M turnover
Birmingham cohort
7
Incorporated since 2022
Birmingham cohort
Key facts
About 15% of the trading cohort reports turnover above £5M (6 of 38 firms) — the rest sits below that revenue band.
18% of the cohort was incorporated since 2022 (7 firms), so a sizeable share is in its first few filing cycles.
GOV.UK guidance says organisations may need an environmental permit or licence for activities that could pollute air, water or land, increase flood risk, affect land drainage, or abstract or impound water.
Permit routes include installations, waste operations, water discharge and groundwater activities, flood-risk activities, radioactive substances and water abstraction.
The Environment Agency is the main regulator for many permits, while local councils handle some installation and solvent-emission permits.
ONS uses SIC 2007 sub-class 74.901 for Environmental consulting activities and publishes VAT/PAYE-based enterprise count, employment, employees and turnover by employment size band for 2022 to 2024.
Environment Analyst says the largest 38 firms raised their share of the global market from 52% in 2019 to 65% in 2024, so larger consultancies appear to be taking more share.
Top Birmingham environmental consulting companies
Horizons Civil Works Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides environmental science and engineering consulting services, including environmental assessment and remediation, geotechnical and civil engineering, hydrology and hydraulics, surveying, and…
Serves B2B and public sector clients, including government agencies, industrial companies, and organisations in oil and gas, power, real estate, renewable energy, technology, transportation, and…
Financial Health
StableStable · Hiring · 11% CAGR over 4y
Location
AESHFERN LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
L A Structural Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides engineering, design and consulting services for the built environment, including infrastructure, buildings, transport and energy systems, covering structural, environmental, sustainability…
Serves public-sector bodies and private organisations in the built environment, including infrastructure owners, transport authorities, energy providers, property developers and major venue operators.
Financial Health
StrongStrong · Growing · 0% CAGR over 2y
Location
RAB CONSULTANTS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides flood risk and drainage consultancy, including flood risk assessments, flood forecasting and warning systems, sustainable drainage design, property flood resilience advice, flood and coastal…
Serves homeowners, businesses, property developers and public-sector or multi-agency emergency teams needing flood-risk, drainage, resilience, emergency planning and business continuity support.
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 4y
Location
Eco Retrofit Solutions Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
HealthyHealthy · 0% CAGR over 1y
Location
B & G CONSULTING ENGINEERS LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides civil and structural engineering consultancy services, including bridge, transport, water and geotechnical engineering, flood management, façades and digital engineering. Works on…
Serves property developers, contractors, infrastructure owners and public-sector agencies delivering built-environment projects across commercial, residential, transport, water, energy, defence,…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
Obsidian Geo-Consulting Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides geoenvironmental and geotechnical ground investigations and site assessments for development and construction projects, identifying ground conditions and risks and producing reports to…
Serves B2B clients in the development and construction sector, including developers, contractors and project teams needing geo-environmental or geotechnical input for site assessment and ground risk.
Financial Health
WeakWeak · Hiring · 11% CAGR over 4y
Location
PHIL JONES ASSOCIATES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides transport planning, highway and civil engineering, environmental and placemaking consultancy for land development and regeneration projects. Services include transport modelling and…
Serves local authorities, infrastructure bodies, landowners and property developers working on land development, regeneration, highways, active travel and public-realm schemes.
Financial Health
StableStable · Hiring · 7% CAGR over 2y
Location
GREENFIELDS ENVIRONMENTAL LIMITED
Trajectory
3y · 2024–NowFinancial sub-scores
Computed from 3 filingsProvides geological and geotechnical consultancy for mineral resource and ground engineering projects, including geological investigations, mineral reserve assessments, quarry design, minerals…
Serves B2B clients in mineral resources, quarrying and ground engineering, including quarry operators, mineral developers, planning applicants and construction or engineering firms needing…
Financial Health
WeakWeak
Location
MODE TRANSPORT LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides transport planning and engineering consultancy services for property development projects, including highway and infrastructure design, drainage engineering, and flood risk assessments,…
Serves UK property developers and development teams across residential, logistics, retail, commercial, healthcare, leisure and education projects, including work with architects, co-professionals and…
Financial Health
HealthyHealthy · -67% CAGR over 4y
Location
Borehole Solutions (North) Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides geotechnical drilling and site investigation services, including sonic and cable percussion drilling, window and windowless sampling, restricted access drilling, water well and soakaway…
Serves construction, civil engineering and development clients needing geotechnical site investigations, from small urban basement projects to large stadium schemes, across the UK and occasional…
Financial Health
DistressedDistressed
Location
BSL Precision Engineering Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides geotechnical drilling and site investigation services, including sonic and cable percussion drilling, window sampling, restricted‑access drilling, water well drilling, soakaway installation,…
Serves B2B clients needing geotechnical site investigations, including construction firms, civil engineering teams, developers and project managers on sites ranging from basements to major…
Financial Health
WeakWeak · Hiring · 7% CAGR over 4y
Location
Johnson Poole & Bloomer Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides engineering consultancy focused on geotechnical and geoenvironmental projects, including site investigation, land contamination assessment, mining and ground stabilisation advice, quarrying…
Serves UK organisations with interests in land development, mineral resources, quarrying, mining and ground risk, including developers, landowners and site operators.
Financial Health
WeakWeak · 5% CAGR over 2y
Location
PLUVIAM ENVIRONMENTAL LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides environmental and civil engineering consultancy for development projects, including sustainable drainage systems (SuDS) design, flood risk assessments, hydraulic calculations, site drainage…
Serves property developers, construction teams and other organisations managing development sites, from small schemes to large multidisciplinary projects, across the UK and further afield.
Financial Health
StrongStrong · Hiring · 29% CAGR over 2y
Location
GEORISK MANAGEMENT LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides geotechnical and environmental consultancy for land development projects, including ground investigation advice, environmental risk assessment, and project validation to meet regulatory…
Sells to land developers, property managers, site vendors and purchasers, and other property professionals needing geotechnical and environmental advice for brownfield and greenfield developments…
Financial Health
WeakWeak · -69% CAGR over 4y
Location
Biyat Energy & Environment Ltd.
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
Geotechnics Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides geotechnical and geoenvironmental site investigation services for construction and infrastructure projects, including ground investigations, soil and material laboratory testing, desk…
Serves B2B clients from SMEs to multinational organisations, particularly construction, infrastructure, utilities and development project teams needing ground, geotechnical and geoenvironmental input…
Financial Health
HealthyHealthy · Profitable, Growing · 0% CAGR over 4y
Location
Caladen Consulting Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides energy consultancy and technical services, including energy assessments, compliance reporting (DEC, TM44, ESOS, SECR), and development of carbon reduction strategies, heat decarbonisation…
Serves organisations with energy and carbon compliance obligations, including large businesses and public-sector or non-domestic building operators seeking net zero planning and decarbonisation…
Financial Health
HealthyHealthy · Hiring · 25% CAGR over 2y
Location
The Treatment Hub Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides environmental remediation services for contaminated land and groundwater using E‑Clay stabilisation and permeable reactive barrier technology. Services include site investigation, soil…
Sells to businesses involved in brownfield land development and contaminated site projects, including property developers, construction firms, environmental consultants, and clients needing…
Financial Health
DistressedDistressed · 0% CAGR over 2y
Location
Envirotreat Technologies Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides land contamination remediation services using modified E‑Clay technology, including soil stabilisation and permeable reactive barriers. Also undertakes site investigation, bioremediation,…
Serves property developers, construction contractors, landowners and environmental consultancies managing brownfield or contaminated land projects, including redevelopment schemes needing planning…
Financial Health
StableStable · 0% CAGR over 2y
Location
FORKERS RENEWABLE ENERGY LTD
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides civil and ground engineering contracting services including wind farm construction, drilling, site investigation, mine shaft stabilisation, grouting, piling, and infrastructure works for…
Serves public and private sector organisations commissioning infrastructure, construction, remediation and ground engineering projects, including utilities, rail, roads, waterways, industrial sites…
Financial Health
StableStable · 0% CAGR over 6y
Location
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How Birmingham environmental consulting companies work and how to sell to them
What they do
Revenue usually comes from project fees, retained advisory work and framework call-offs rather than subscriptions or licence income. Birmingham environmental consultancies typically package their work as fixed-fee technical reports, day-rate specialist input, milestone-based support for planning or construction, and recurring compliance advice for clients with ongoing site obligations. Margins depend on consultant utilisation, the mix of senior technical review versus junior fieldwork, and the ability to reuse methods without treating each engagement as bespoke. Subcontracted laboratory analysis, surveys and modelling can sit inside the client fee, so scope control matters.
Who they sell to
Most sales are made to organisations with property, land, infrastructure or operational environmental exposure. Typical buyers include development directors, project managers, estates leads, environmental managers, heads of sustainability, legal teams and procurement officers. Smaller assignments can be won through direct referral or repeat client relationships, while public-sector and infrastructure work tends to move through frameworks, approved-supplier lists or formal tenders. Sales cycles vary by risk: a narrow site review may move quickly, but planning-linked, multi-workstream or regulated projects usually need technical scoping, budget approval and evidence of comparable work.
What they buy
Most environmental consulting firms tend to spend on tools and services that protect billable time, technical quality and bid conversion. Common categories include project accounting, time recording, resource planning, CRM, bid management, document control, field data capture, mapping and modelling software, secure file sharing, cyber security, HR systems and health-and-safety administration. They also buy professional services around accountancy, legal review, insurance, recruitment, technical training, bid writing and marketing. Firms with more site work may need monitoring equipment, calibration, vehicles, laboratory partners and subcontractor management, while office-based advisory teams often prioritise workflow, reporting and client-portal systems.
Why and how to sell to them
Environmental consulting buyers tend to evaluate suppliers when workload rises faster than headcount, when a new framework win changes delivery requirements, or when a client demands better security, audit trails or reporting discipline. Other triggers include permit deadlines, planning surges, senior hires, merger activity, insurance renewal and a move from founder-led relationships to more formal account management. Outbound angles work better when they connect to margin leakage, utilisation, evidence handling, consultant retention or tender compliance. Generic sustainability messaging is usually too broad; these firms buy when a service helps them deliver technical work with less rework and clearer accountability.
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.
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