SEL Environmental

What SEL Environmental does

SEL Environmental Ltd is a privately owned UK specialist contractor headquartered in Blackburn, founded around 1999–2000, providing design, supply and installation services for sustainable drainage systems (SuDS) and ground gas protection solutions to the construction industry. The firm serves architects, consultants, engineers, contractors and developers tackling challenging subterranean conditions including high water tables, unstable soils, contaminated land, shallow outfalls and ground-gas migration. Its core technology stack spans modular attenuation systems (Permavoid, Wavin Aquacell, Polypipe Polystorm), permeable pavement liners, ground-gas barrier membranes, vent bollards, the proprietary Virtual Curtain gas migration barrier, and a cloud-based remote water-management platform (Cloud Water Control) integrating sensors and remote valve operation.

SEL generates revenue through three streams: one-time product supply (geosynthetics, membranes, chambers, tanks), professional design services (free design review, method statements, CAD details, specifications), and installation services for attenuation tanks, pond liners, podium decks, permeable pavements and reed beds. Engagement is project-based and flexible — clients can purchase full design-supply-install packages or opt for supply-only or install-only. Go-to-market is direct enterprise field sales into UK construction professionals, supported by phone-based technical consultation and an extensive online technical library across six divisional websites (SELSource, Geomembrane Installation, SEL Sports, Cloud Water Control, Ground Gas Protection, Virtual Curtain). Notable project credentials include the London 2012 Olympic equestrian arena, Tottenham Hotspur stadium, Anfield, the White Collar Factory rooftop running track and Europe's largest Wavin Aquacell installation (~5,500 m³ at Jennetts Park).

Name

SEL Environmental

Legal name

SEL Environmental Ltd

Website

https://selel.co.uk

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

11–50 employees

Short description

UK specialist contractor providing design, supply and installation of sustainable drainage systems (SuDS) and ground gas protection solutions for architects, engineers and contractors facing challenging site conditions.

Ownership category

akta.pro rank

Product category

Environmental Construction Services

NAICS

Water and Sewer Line and Related Structures Construction (237110)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Environmental Compliance & Permitting (BPAHAJAA)

Keywords

• Sustainable drainage systems
• Gas protection solutions
• Attenuation tank installation
• Rooftop sports surfaces
• Ground gas barriers

Headquarters

HQ city

Blackburn

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Product Supply: Supply of specialist drainage and gas protection products including permeable membranes, geotextiles, flow control chambers, attenuation tanks, and gas barrier systems. Products are sold as one-time supply transactions to contractors and construction companies.
2. Design Services: Design services including free design review, full technical design support, method statements, risk assessments, CAD details, and specifications provided to architects, engineers and contractors.
3. Installation Services: Installation services for geosynthetic installations including attenuation tanks, pond liners, podium deck drainage systems, permeable pavement liners and reed beds.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

SEL Environmental is a privately owned UK specialist contractor that designs, supplies, and installs sustainable drainage systems (SuDS) and ground gas protection solutions for the construction industry. The company provides integrated packages including attenuation tanks, permeable pavements, car park drainage, ground gas membranes, and rooftop sports facilities (MUGAs, running tracks, playdecks), operating through six divisional brands covering SuDS, gas protection, geomembrane installation, sports surfaces, and cloud-based water monitoring.

Product overview

SEL Environmental is a specialist contractor offering a portfolio of integrated sustainable drainage (SuDS) and ground gas protection solutions. The core product line centers on SuDS surface water drainage systems including Permavoid shallow collection and attenuation systems, modular attenuation tanks (Wavin Aquacell, Polypipe Polystorm), and flow/silt control chambers. Complementary offerings include rooftop sports facilities (MUGAs, running tracks, playdecks), green roofs, blue roofs, permeable pavements, and rain gardens for green infrastructure. Gas protection capabilities encompass barrier membranes, vent bollards, vent stacks, and the Virtual Curtain Gas Migration Barrier. Remote monitoring is handled through cloud-based water management with sensor integration. Products are delivered via design, supply, and installation packages across six divisional brands: SELSOURCE (sustainable drainage), Geomembrane Installation, SELSports (rooftop sports), Cloudwater Control (remote monitoring), Ground Gas Protection, and Virtual Curtain.

Differentiator

Problem solved

Functional benefit

Brands

• SEL Source: Sustainable drainage solutions and products for housing, office, retail, warehousing, industrial, leisure and school developments
• SEL Sports
• Cloud Water Control
• Ground Gas Protection
• Virtual Curtain
• Geomembrane Installation

Products and services

• SuDS (Sustainable Drainage Systems) Surface water drainage solutions for housing, commercial, and car park applications, designed to meet LLFA criteria and integrate with green infrastructure including green roofs, blue roofs, permeable paving, rainwater harvesting, and attenuation.
• Ground Gas Protection Systems Complete gas protection systems including gas barrier membranes, gas vent bollards, vent stacks, and validation services to protect buildings from harmful ground gases such as methane, radon, and carbon dioxide on brownfield or potentially gassing sites.
• Virtual Curtain Gas Migration Barrier Alternative to gravel vent trench that intercepts, treats and controls lateral migrating gases on contaminated or gassing sites.
• Cloud Water Control Remote Monitoring Remote integrated water management solutions combining monitoring sensors, remote valve operation technologies, and cloud computing for water systems on construction and development sites.
• Rooftop Sports Facilities Rooftop sports installations including artificial pitches, MUGAs (Multi-Use Games Areas), running lanes and playdecks, combining water management systems with quality sports surfacing.
• Geomembrane Installation Quality assured installation of attenuation tanks, pond liners, podium deck drainage systems, permeable pavement liners, and reed beds.
• Attenuation Tanks Modular underground storage systems for stormwater management, including Wavin Aquacell and Polypipe Polystorm products, supplied and installed for site-specific attenuation requirements.
• Permavoid System Shallow collection, treatment and attenuation system used for car park drainage, podium deck drainage, and permeable paving applications, including Europe's largest Wavin Aquacell installation at Jennetts Park (approximately 5,500 cubic metres).
• Design and Technical Support Services Design services including free design review, full technical design support, method statements, risk assessments, CAD details, and specifications provided to architects, engineers, and contractors for SuDS and gas protection projects.

Quantifiable outcome

• Largest Wavin Aquacell installation in Europe - approximately 5,500 cubic metres at Jennetts Park, Berkshire
• +1 more outcomes

Named customers8 records

Segments5 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

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Wavin (Orbia): Wavin manufactures the Aquacell modular attenuation system that SEL installs at scale (including the 5,500m³ Jennetts Park project). Both serve UK construction drainage demand, though Wavin is a product OEM and SEL is a specialist design-and-install contractor — making them channel partners as well as adjacent competitors.
• Polypipe (Genuit Group):

Market position

Strengths1 record

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/SEL_Env
• Facebookfacebook.com/SEL-Environmental-Ltd-1431236843841505

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 SEL Environmental