What Aqualiner does

Aqualiner Limited is a UK-based technology licensing company that has developed and patented the Melt in Place Pipe (MIPP) process, a trenchless pipe renewal technology for the water and sewerage markets. The core technology involves inserting a heat-treated composite sock (an engineered blend of glass fibres and polypropylene filaments) into an existing pipe, then passing an internal heating pig that melts the material above 180°C and consolidates it against the pipe wall under pressure to form a 60+ year design-life structural lining without excavation. The process is positioned as a fully structural alternative to traditional open-cut replacement and to incumbent Cured in Place Pipe (CIPP) methods, and is described by the company as comparable in complexity to aerospace engineering. Aqualiner is headquartered in Loughborough, Leicestershire, was founded in 2007, and operates with a 1-10 employee team.

The product suite sold to licensees includes 21KW heating pigs (designed for 8" and 9" pipe diameters), motorised 3-bar inversion drums capable of deploying 70m silicone rubber inversion bags, a proprietary process control unit that monitors and records temperature and pressure as a function of time, and 100m flexible umbilical hoses. Aqualiner holds two granted UK patents (GB2554431 covering the heating pig design, granted July 2018; GB2571127 covering even airflow and temperature control, granted March 2021 and expiring February 2038), a registered MIPP trademark, and has secured UK Regulation 31 drinking water approval, NSF 61 certification for North America, and WRc Approved status for sewer applications (BS EN 13566-4:2002 compliant). The process was co-developed with Severn Trent Water, Anglian Water, Yorkshire Water and Wessex Water, and the world's first live drinking water installation of a fully structural pipe lining was completed with Severn Trent Water in March 2021.

The business operates an asset-light licensing model combined with equipment and materials sales. Revenue streams comprise technology licensing royalties from utility contractors, proprietary equipment sales (inversion drums, heating pigs, control units, umbilical hoses) to licensees, and proprietary materials supply (engineered liners and inversion bags). Exclusive territory licenses have been sold for Japan, South Korea, Singapore, Taiwan and South Africa, alongside direct engagement with four major UK water utilities. Aqualiner received an unsolicited US$21 million trade-sale offer in 2010 and is planning a further funding round followed by an IPO within 12-18 months.

Name

Aqualiner

Legal name

Aqualiner Limited

Website

https://aqualiner.co.uk

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

1–10 employees

Short description

Aqualiner Limited licenses its patented Melt in Place Pipe (MIPP) trenchless pipe-renewal technology and sells proprietary equipment and materials to UK water utilities and international utility contractors for drinking water and sewerage pipe rehabilitation.

Ownership category

akta.pro rank

Product category

Trenchless Pipe Renewal Technology

NAICS

Plastics Pipe, Pipe Fitting, and Unlaminated Profile Shape Manufacturing (32612)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050)

akta.pro primary industry

Industrial Process & Chemical-Resistant Pipe Systems (CPVC/PVDF/PP) (IMANADAF)

akta.pro secondary industry

Pipe Accessories & Joining Systems (Couplings, Gaskets, Solvent Cement, Fusion Fittings) (IMANADAJ)

Keywords

• Trenchless pipe renewal
• Water infrastructure rehabilitation
• Structural pipe lining
• Thermoplastic composite liners
• Utility contractor licensing

Headquarters

HQ city

Loughborough

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Technology Licensing: Licensing the technology to global utility contractors. Aqualiner is a technology licensing company that exploits IP and know-how through licensing agreements.
2. Equipment Sales: Selling proprietary equipment (inversion drums, heating pigs, control units, umbilical hoses) to licensees and utility contractors.
3. Materials Sales: Selling proprietary materials including engineered liners (composite socks) and inversion bags to utility contractors.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

Aqualiner commercialises its patented Melt in Place Pipe (MIPP) trenchless pipe renewal technology, selling proprietary equipment (heating pigs, inversion drums, process control units, umbilical hoses) and engineered thermoplastic composite liner materials to licensed utility contractors. The MIPP process inserts a heat-treated composite sock (glass fibres and polypropylene filaments) into existing water or sewerage pipes and melts it above 180°C using a heating pig, then consolidates it against the pipe wall via a pressurised silicone rubber inversion bag to form a fully structural lining with a 60+ year design life.

Product overview

Aqualiner is a technology licensing company offering a unified pipe renewal solution centered on the Melt in Place Pipe (MIPP) technology. The core product is a thermoplastic composite engineered liner combining glass fibres and polypropylene filaments. The product suite includes specialized equipment components—Heating Pigs, Inversion Drums, Silicone Rubber Inversion Bags, a Process Control Unit, and an Umbilical Hose—that work together as an integrated trenchless pipe renewal system. The business model combines technology licensing to utility contractors with equipment and materials sales.

Differentiator

Problem solved

Functional benefit

Products and services

• Aqualiner Melt in Place Pipe (MIPP) Lining Technology The primary pipe renewal technology and core product offering: inserts a heat-treated composite sock (blend of glass fibres and polypropylene filaments) into existing water or sewerage pipes up to 100 meters long, then melts the material above 180°C using a heating pig and consolidates it against the pipe wall via a pressurised silicone rubber inversion hose to form a fully structural, watertight lining with 60+ year design life. Sold via technology licensing to global utility contractors, accompanied by proprietary equipment and materials.
• Aqualiner Heating Pigs Proprietary heating elements designed for pipes with diameters of 8" and 9", featuring 21 KW heaters coupled with technology to mix and diffuse hot air efficiently. The pig heats the engineered liner above 180°C to melt the polypropylene material. Covered by patent GB2554431 covering the unique internal design of the heating pig.
• Aqualiner Inversion Drums Motorised and process-controlled 3Bar inversion drum capable of deploying a 70M silicone rubber inversion bag at a precise rate and under controlled pressure.
• Aqualiner Silicone Rubber Inversion Bags Reinforced silicone rubber inversion bags up to 70M long capable of operating up to 3 Bar and process temperatures up to 215°C. The bags consolidate the molten liner against the pipe wall under pressure.
• Aqualiner Process Control Unit Proprietary control unit that monitors and records key process data including temperature and pressure as a function of time, controlling the temperature of hot air exiting the heating pig.
• Aqualiner Umbilical Hose 100M long flexible twin hose umbilical providing power and compressed air to the heating pig. Light, robust, and flexible enough to navigate around tight bends, inlets and culverts.

Quantifiable outcome

• 120,000km of UK pipes (15bn market) need replacement
• +4 more outcomes

Named customers9 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Five partnerships are on record, tiered core.

• Severn Trent WatercoreStrategic or Co-development PartnerCo-developed the patented process with Severn Trent Water. Successfully completed world's first live drinking water installation of fully structural pipe lining in March 2021. Continued collaboration on initial commercial installations.
• Anglian WatercoreStrategic or Co-development PartnerCo-developed the patented process with Anglian Water. Undertaking initial commercial installations in drinking water pipes.
• Yorkshire WatercoreStrategic or Co-development PartnerCo-developed the patented process with Yorkshire Water. Undertaking initial commercial installations in drinking water pipes.
• Wessex WatercoreStrategic or Co-development PartnerCo-developed the patented process with Wessex Water. Undertaking installations in drinking water pipes.
• Water Research Centre (WRc)coreTechnology or IntegrationIndependent long-term (50 year) creep and strain corrosion tests completed at WRc, enabling the Company to gain WRc Approved status for sewers installations.

Scale indicators10 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Reline Europe: Reline Europe is a leading European manufacturer of UV-cured CIPP glass-fibre reinforced pipe liners for sewer and drinking-water rehabilitation, competing head-to-head with Aqualiner's MIPP glass-fibre/PP liner in the trenchless renewal space.
• Nuflow Technologies: Nuflow is a global trenchless pipe-rehabilitation provider offering epoxy and CIPP lining solutions for water and sewer infrastructure, targeting the same utility and contractor customer base as Aqualiner.
• iMPREG GmbH: iMPREG is a specialist manufacturer of glass-fibre reinforced CIPP liner systems used in trenchless sewer and pressure pipe renewal, making it one of the closest technology analogues to Aqualiner's glass-fibre/PP composite liner.
• National Liner: National Liner is a North American manufacturer of felt and reinforced CIPP liners for trenchless sewer and storm-water rehabilitation, serving the same municipal utility customer base Aqualiner targets with its MIPP system.
• SAERTEX MultiCom: SAERTEX MultiCom produces glass-fibre reinforcement materials and pre-impregnated liners for CIPP and trenchless pipe renewal — the most direct materials-side peer to Aqualiner's engineered composite sock technology.

Broad incumbents

• Trelleborg Pipe Seals: Trelleborg's pipe-seals business supplies a broad range of sealing, lining, and trenchless rehabilitation products to water and sewer utilities globally, making it a comparable large-portfolio incumbent against Aqualiner's focused structural-liner offering.
• Insituform Technologies (Aegion Corporation): Insituform/Aegion is the world's leading CIPP (cured-in-place pipe) trenchless rehabilitation company, offering competing structural pipe-lining solutions to municipal water and sewer utilities globally — directly comparable to Aqualiner's trenchless structural liner offering.
• Sekisui Chemical: Sekisui is a major Japanese conglomerate with significant pipe-products, pipe-renewal, and water-infrastructure operations — comparable to Aqualiner and directly relevant as a likely competitor or partner in the Japanese licensee market.
• Aarsleff (Per Aarsleff Holding): Per Aarsleff is a major European infrastructure contractor with significant pipe-laying and trenchless pipe-renovation operations, making it a comparable established player in the same trenchless pipe-renewal space as Aqualiner.

Regional players

• Cosmo Eco: Cosmo Eco is one of Japan's leading trenchless pipe-renewal contractors deploying CIPP and associated lining technologies, a key regional peer for Aqualiner given Aqualiner's exclusive licence granted for Japan.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/AqualinerLimited
• LinkedInlinkedin.com/company/aqualiner

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

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 Aqualiner