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Environmental Consultants

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Almost nobody in the UK wakes up wanting an environmental consultant. You end up needing one because a planning officer has attached a condition to your permission, because a buyer's solicitor has raised an enquiry about a former filling station next door, or because a lender will not release funds until somebody with letters after their name has written down what is in the ground.

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The work is mostly investigative. A consultant reads the history of your site, decides whether there is a credible route from a contaminant to something that can be harmed, and then digs, samples and tests until that question is answered with numbers. If there is a real problem they design the fix and sign off that it worked.

What makes this a British speciality rather than a generic one is the regulatory geography. Land contamination is handled by local authorities as the lead regulator, sitting under three national environment bodies with three separate sets of expectations, and a consultant who only knows one of them will write you a report that the wrong council rejects.

What UK environmental consultants are actually hired to do

  • Preliminary risk assessment, still widely sold as a Phase 1 desk study: historic maps, landfill records, borehole logs and a walkover, with no digging.
  • Intrusive site investigation, the Phase 2 stage, where trial pits and boreholes turn the desk study's suspicions into soil, water and ground gas results.
  • Remediation design and verification, which produces the report a council needs before it will discharge a contaminated land planning condition.
  • Due diligence for a purchase, refinance or lease assignment, where the client is a lender or a solicitor rather than a developer.
  • Ground gas monitoring on sites near former landfill, which needs repeat visits across a range of atmospheric pressures rather than one.
  • Waste classification and materials management, deciding whether excavated soil is waste and what it legally costs you to move it.

The LCRM stages your report has to follow

The Environment Agency, Natural Resources Wales, SEPA and the Northern Ireland Environment Agency all expect land contamination work to follow land contamination risk management, known as LCRM. It has three stages: risk assessment, options appraisal, then remediation and verification. Stage 1 is tiered, running from a preliminary risk assessment through generic quantitative risk assessment to detailed quantitative risk assessment.

You must always start with the preliminary risk assessment. If it concludes the risks are acceptable and the regulator agrees, the process can stop there, which is why a good desk study is worth paying properly for. Where the risks are not acceptable, stage 2 shortlists remediation options against evaluation criteria and stage 3 delivers a remediation strategy, the works themselves and a verification report.

Trade language and regulator language differ here, and that trips people up. Consultants and lenders still say Phase 1 and Phase 2; the guidance your council will judge the report against says stage 1 tiers and intrusive site investigation. They describe the same fieldwork, so ask which the deliverable will be written to.

Who counts as a competent person for contaminated land

LCRM expects whoever applies it to be competent in the specific task, and in England that means meeting the competent person definition in Annex 2 of the National Planning Policy Framework. The guidance lists the credentials that usually demonstrate this: a Suitably Qualified Person registered under the National Quality Mark Scheme, the SoBRA accreditation scheme, a Specialist in Land Condition, a specialist under the gas protection verification scheme, or chartered membership of a relevant body with real land contamination experience.

The National Quality Mark Scheme is voluntary and run by CL:AIRE, not by government, but the Environment Agency, Natural Resources Wales and SEPA all support its use. A registered Suitably Qualified Person quality checks the report and signs a declaration that it has been verified under the scheme. It does not replace regulator review and it carries a small administration fee, so ask whether it is included before you assume it is.

Planning conditions, permits and building control

Most contaminated land work in this country is delivered through planning rather than through enforcement. The planning practice guidance is explicit that an applicant should supply proportionate site investigation information prepared by a competent person so the authority can judge whether more investigation or different remediation is needed. Conditions are typically written in sequence, so the investigation report, the remediation strategy and the verification report each have to be approved before the next stage of building can proceed.

Two other regimes bite at the same time. Building Regulations require reasonable precautions against contaminants in the ground to be covered by buildings, and an environmental permit from the Environment Agency is normally needed to treat or redeposit contaminated soils where those soils count as waste. Ask early which of the three your scheme engages, because the permit route has its own timetable that will not bend around your start on site.

Part 2A liability and why nobody wants a determination

Part 2A of the Environmental Protection Act 1990 requires every local authority to inspect its area from time to time to identify contaminated land and to decide whether any of it should be designated a special site. Land only meets the statutory definition where significant harm is being caused or there is a significant possibility of it, or where significant pollution of controlled waters is being caused or is significantly possible.

Liability follows the polluter first. Anyone who caused or knowingly permitted the substances to be in, on or under the land is an appropriate person, and only for remediation referable to the substances they caused or permitted. Where no such person can be found, the burden can fall on the current owner or occupier, which is exactly why purchasers pay for investigation before completion rather than after.

Part 2A is deliberately a last resort: the statutory guidance directs it at land that cannot be dealt with any other way, including through planning. In practice your consultant's job is usually to keep you out of the regime rather than to argue inside it.

Where these projects go wrong

  • A desk study written without a site walkover, which misses the fuel tank, the filled hollow or the neighbour's yard.
  • Too few sampling locations to characterise a site, so the council asks for a second round of fieldwork after the excavators have arrived.
  • Ground gas monitoring squeezed into a fortnight of settled weather, which a reviewer will reject as unrepresentative.
  • Excavated soil moved off site without anyone deciding whether it is waste, creating a duty of care problem on top of a ground problem.
  • A verification report that describes what was intended rather than evidencing what was installed, which stalls the discharge of conditions.
  • Reports written to English practice for a Welsh or Scottish site, where the regulator expects additional national guidance to be followed.

Three regulators, four nations, one local authority

The Environment Agency covers England and was established in 1996; SEPA covers Scotland and describes its own role as spanning regulation, monitoring and resolving environmental harm; Natural Resources Wales covers Wales and the Northern Ireland Environment Agency covers Northern Ireland. LCRM applies across all four, but Scotland has additional SEPA contaminated land guidance and an information note on using LCRM there, and Wales expects the Natural Resources Wales land contamination guidance to be followed alongside it.

None of them is normally your first point of contact. Local authorities are the lead regulators for both the planning system and the Part 2A regime, and LCRM tells you to check with the local authority that using the guidance is acceptable at all. The national bodies step in for special sites and wherever there is a risk of pollution to controlled waters. When you are choosing a consultant, ask which councils they have discharged conditions with recently, not which agency they name on the website.

Environmental Consultants: frequently asked questions

Do I need a Phase 2 if the Phase 1 finds nothing?

Not necessarily. LCRM says you can stop after the preliminary risk assessment if it concludes the risks are acceptable and the regulator agrees. That agreement is the operative part: a consultant can recommend no further work, but the local authority discharging your condition decides whether it accepts the recommendation.

Who pays to clean up contamination, the polluter or me?

Under Part 2A the appropriate person is whoever caused or knowingly permitted the substances to be there, and only for the remediation referable to those substances. Where that person cannot be found, liability can pass to the current owner or occupier of the land, which is why the question is normally settled by investigation before a sale rather than argued afterwards.

Can I move contaminated soil off my own site?

Only inside the waste rules. The waste duty of care code of practice applies to anyone who produces, carries, keeps or treats controlled waste, failure to comply is an offence with no upper limit on the fine, and transfers need a waste transfer note or equivalent documentation. Hazardous waste needs a consignment note for essentially every movement, including between premises in the same business.

Is the National Quality Mark Scheme compulsory?

No. It is a voluntary scheme administered by CL:AIRE, though the Environment Agency, Natural Resources Wales and SEPA support its use. Reports produced under it are checked by a registered Suitably Qualified Person, but you still need the relevant regulator to review the report and there is an administration fee to budget for.

My site is in Scotland and the quote reads like an English one. Does that matter?

It can. LCRM applies in Scotland, but you are also expected to refer to SEPA's contaminated land guidance and to the information note on how LCRM is used there, and to be familiar with current Scottish site assessment requirements. Ask a prospective consultant directly which Scottish councils have accepted their reports.

Sources

  1. Environmental Protection Act 1990, Part 2A (contaminated land)
  2. Land contamination risk management (LCRM), Environment Agency
  3. LCRM: before you start
  4. Planning practice guidance: land affected by contamination
  5. Waste duty of care: code of practice
  6. Environment Agency: about us
  7. About SEPA

Written by the LokalMatch editorial team. Last reviewed 22 September 2026. How we write and check our guides

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What affects the fees environmental consultants charge

Fees depend on the work involved and how the professional bills. We only publish fee ranges when they’re backed by real LokalMatch data or reliable sources. Until then, here’s what usually changes the fee:

  • Scope and complexity of the work
  • How the firm bills: hourly, per project or on a monthly retainer
  • Experience of the team
  • Timeline and how urgent the work is
  • Ongoing support after the work is delivered

How to compare environmental consultants before you hire

  • Ask for examples of similar work for clients like you.
  • Read reviews and ask for references you can contact.
  • Make sure the scope, deliverables and timeline are written down before work starts.
  • Ask who will do the work: an in-house team, freelancers or subcontractors.
  • Compare two or three proposals before you decide.

Questions to ask environmental consultants before you hire

  • Have you done work like this before, and can I see examples?
  • Who will work on this, and who is my main contact?
  • How do you charge: hourly, per project or monthly?
  • What is included, and what costs extra?
  • How long is the contract, and how can either side end it?
  • How will you report on progress?
  • Who owns the work, files and accounts you set up for me?

Licences and registration

This kind of work is often limited to licensed or registered professionals, and the rules depend on where you are. Ask which body they’re registered with, and check their status on that body’s public register before you hire.

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