What Silkstone Environmental does

Silkstone Environmental Limited is a Sheffield-based consultancy founded in 2000 that provides integrated environmental, geotechnical, planning and surveying services to the quarrying, landfill, construction and mineral products industries across Yorkshire, the North of England and the Midlands, with stated reach more widely across the UK. Its core service portfolio comprises Phase 1 Preliminary Risk Assessments (desk studies), Phase 2 Site Investigations (intrusive soil sampling, groundwater and ground gas monitoring, geotechnical testing), environmental monitoring and assessment (groundwater/leachate sampling, landfill gas monitoring, dust deposition, noise impact assessment with SoundPLAN modelling, and GasSim2 landfill gas modelling), minerals and waste planning and permitting (including EIA, drilling supervision and site restoration design), and a surveying practice covering Topographical Surveys, Measured Building Surveys, and Reality Capture 3D surveying using 3D laser scanners, UAVs, GNSS and total stations compatible with AutoCAD and Revit deliverables. The firm employs geotechnical engineers, engineering geologists, waste managers, mineral and waste planners, contaminated land specialists and surveyors, with senior partners holding over 50 years of combined industry experience, and supplements capacity through associate consultants in ecology, civil/structural engineering, acoustics and mineral valuation.

The business operates a project-based professional services model, pricing tailored to individual client requirements with no publicly disclosed rates, and reaches clients through direct sales, industry membership referrals (ISEP, MPA, ACE) and word-of-mouth. Revenue is generated entirely from professional consulting fees under Silkstone Environmental Limited, a private limited company domiciled in England and Wales. The company became a wholly-owned subsidiary of Phenna Group in 2021 after acquisition by CTS (Construction Testing Solutions), and now operates within Phenna Group's Infrastructure Division alongside other global Testing, Inspection, Certification and Compliance (TICC) subsidiaries, with shared operational and data processes governed at the group level. Headcount is reported in the 11-50 range, the firm holds no disclosed patents, AI capabilities, or product-side software IP, and revenue is not publicly disclosed.

Name

Silkstone Environmental

Legal name

Silkstone Environmental Limited

Website

https://silkstoneenvironmental.co.uk

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

11–50 employees

Short description

Silkstone Environmental is a Sheffield-based consultancy providing geotechnical, environmental, planning and surveying services to the quarrying, landfill and construction industries across Yorkshire, the North of England and the Midlands. Founded in 2000 and part of Phenna Group's Infrastructure Division since 2021.

Ownership category

akta.pro rank

Product category

Environmental and Geotechnical Consulting Services

NAICS

Support Activities for Nonmetallic Minerals (except Fuels) Mining (213115), Support Activities for Mining (2131), Surveying and Mapping (except Geophysical) Services (541370)

SIC

Services-Commercial Physical & Biological Research (8731)

akta.pro primary industry

Mineral Exploration & Geoscience Services (Geology, Geophysics, Geochemistry, Resource Modeling) (IMAKAKAA)

Keywords

• Environmental consulting
• Geotechnical site investigation
• Mineral waste planning
• Land surveying services
• Contaminated land assessment

Headquarters

HQ city

Sheffield

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Professional Consulting Services: Silkstone Environmental generates revenue through providing professional consulting services including geotechnical and geo-environmental site investigations, environmental monitoring and assessment, minerals and waste planning and permitting, and topographical and measured building surveying services. Services are project-based and tailored to client requirements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Silkstone Environmental is a Sheffield-based independent consultancy providing environmental, geotechnical, planning, and surveying services to the quarrying, landfill, and construction industries. Core deliverables include phased site investigations (Phase 1 desk studies and Phase 2 intrusive investigations), environmental monitoring and impact assessment (groundwater, landfill gas, dust, noise), minerals and waste planning, permitting and EIA support, and topographical and measured building surveying delivered using total stations, GNSS, UAV drones, and 3D laser scanning.

Product overview

Silkstone Environmental operates as a consultancy offering integrated environmental, geotechnical, planning, and surveying services for the quarrying, landfill, and construction industries. The portfolio consists of core geotechnical services (Phase 1 Desk Studies and Phase 2 Intrusive Investigations), environmental monitoring and assessment, planning consultancy for minerals and waste, and specialized surveying services (Measured Building Surveys, Topographical Surveys, Reality Capture 3D, and Quarry/Landfill 3D Design Surveys). The firm employs advanced technologies including laser scanners, UAVs/drones, GNSS, total stations, and specialist software (SoundPLAN, GasSim2, AutoCAD, Revit) to deliver comprehensive site characterization, contamination assessment, and survey data across Yorkshire, the North of England, and the wider UK.

Differentiator

Problem solved

Functional benefit

Products and services

• Phase 1 Preliminary Risk Assessments (Desk Studies) Desktop-based preliminary risk assessments including historical land use review, site walkover surveys, geological and mining risk assessment, hydrogeological review, and conceptual site model development for planning and due diligence purposes.
• Phase 2 Site Investigations Intrusive site investigations including soil sampling, groundwater monitoring, ground gas assessment, and geotechnical testing to characterise subsurface conditions and contamination for planning, design, and remediation decisions.
• Geotechnical Services Integrated site investigation, geotechnical and geo-environmental services including phased investigations, cable percussion and rotary drilling, trial pitting, ground penetrating radar, and earthworks design and CQA supervision.
• Environmental Services Comprehensive environmental monitoring and assessment including groundwater/leachate sampling, landfill gas monitoring, dust deposition monitoring, noise impact assessments, and noise modelling using SoundPLAN software for quarries, waste, and construction industries.
• Planning Consultancy Full minerals and waste industry consultancy including planning applications, Environmental Impact Assessment, permit applications, mineral reserve assessments, drilling supervision, landfill gas modelling, and site restoration design across opencast, quarrying, and recycling operations.
• Measured Building Surveys Precise documentation of building dimensions, layouts, and structures using laser scanners, UAV drones, and total stations, delivered as CAD drawings or BIM-ready models including floor plans, elevations, sections, and roof plans.
• Topographical Surveys Land surveys mapping natural and artificial site features including terrain levels, boundaries, buildings, vegetation, and waterways, utilising total stations, GNSS, UAVs, and laser scanning to produce 2D drawings or 3D models.

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Five partnerships are on record, tiered core.

• CTS (Construction Testing Solutions)coreOthers · 1 January 2021Silkstone Environmental was acquired by CTS (Construction Testing Solutions) in 2021. CTS is part of the Phenna Group Infrastructure Division, making Silkstone part of a global Testing, Inspection, Certification and Compliance (TICC) business operating through subsidiary companies globally.
• Phenna GroupcoreOthersSilkstone Environmental is now part of Phenna Group Infrastructure Division. Phenna Group is a global provider of testing, inspection, certification and compliance services operating through subsidiary companies globally.
• ISEP (Institute of Sustainability and Environmental Professionals)coreOthersSilkstone Environmental is an ISEP Consultancy Partner. ISEP is the global membership body at the centre of the sustainability agenda, connecting business and individuals across industries, sectors and borders.
• MPA (Mineral Products Association)coreOthersSilkstone Environmental is an Associate Member of the MPA. The MPA is the sectoral association for the mineral products industry.
• ACE (Association for Consultancy and Engineering)coreOthersSilkstone Environmental is a corporate member of ACE. ACE is the association for the UK's professional consultancies and engineering companies operating in the social and economic infrastructure sectors.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Environmental Resources Management (ERM): Global environmental and sustainability consultancy delivering impact assessment, permitting, and contaminated land services to extractive industries and infrastructure developers - directly comparable in service mix if not geography.
• SLR Consulting: UK-headquartered environmental and advisory consultancy offering environmental impact assessments, planning support, contaminated land, and surveying services to quarrying, waste, and infrastructure clients - directly comparable to Silkstone's minerals, waste, and construction focus.
• RSK Group: UK-based environmental, engineering, and technical services group providing geo-environmental, geotechnical, contaminated land, and surveying services to minerals, waste, and construction sectors, with strong UK regional coverage similar to Silkstone.
• Hydrock (now part of Stantec): UK consultancy delivering geo-environmental, geotechnical, contaminated land, and infrastructure design services to quarrying and construction clients - an analogous mid-sized UK practitioner profile.
• Wardell Armstrong: UK environmental and engineering consultancy providing minerals planning, quarry design, contaminated land, and geo-environmental services to extractive industries - directly comparable in scope and client base to Silkstone.

Broad incumbents

• AtkinsRéalis (formerly Atkins / SNC-Lavalin): Global engineering services group with UK environmental, geotechnical, and planning practices for infrastructure and mining projects - a broad incumbent operating in the same end-markets.
• Stantec: Global design and consulting firm with UK environmental, geotechnical, and infrastructure practices (now encompassing Hydrock), serving minerals, waste, and construction clients across multiple geographies.
• WSP: Global professional services consultancy with significant UK environmental, geotechnical, and planning practices serving quarrying, waste, and infrastructure clients - a much larger broad incumbent competing for adjacent mandates.
• AECOM: Global infrastructure consulting firm with extensive UK environmental, geotechnical, and planning capabilities serving minerals, waste, and construction clients - a broad incumbent and potential competitor on larger tenders.
• Ramboll: Global engineering, environmental, and consulting firm with a UK practice offering environmental impact assessment, geotechnical, and planning services for infrastructure and mining clients - broad incumbent that competes for overlapping mandates.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/silkstone-environmental-limited

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Silkstone Environmental