What Cleaner Seas Group does

Cleaner Seas Group Ltd is a UK-based private limited company founded in Cornwall in 2018 that develops and commercialises proprietary cartridge-based microfibre filtration systems for domestic and commercial washing machines, combined with a closed-loop return-and-recycle infrastructure. Its core technology, the patented Indikon-1 filter design, uses replaceable filter cartridges wound with filter paper to capture up to 99% of microfibres from laundry wastewater before they enter drains or the marine environment. The product portfolio spans two lines: Indi, a £129.99 plug-and-play home filter installed in ten minutes without plumbing or tools, and INDIKON, a scalable professional system with smart-tech functionality (app, data, and industrial system syncing) targeting cruise ships, hotels, commercial laundries, textile manufacturers, and wastewater treatment facilities. Replacement cartridges retail at £14.99 each on a roughly six-month cycle, providing a recurring revenue stream layered on top of one-time hardware sales.

The company operates a dual go-to-market: direct-to-consumer e-commerce via cleaner-seas.com (UK shipping only, £5.95 standard delivery) and an enterprise business portal for commercial and industrial customers with customised filtration integration and cartridge return services. Distribution is supported by consultancy and innovation services and an event-driven marketing mix including headline sponsorship of the GB Row Challenge, BBC One's The One Show feature, and the Generation Sea Change documentary with Royal Caribbean and Monty Halls. Named partnerships include Coldplay (Music of the Spheres Tour), TUI Group, the University of Plymouth (research and development), University of Portsmouth and University of Surrey (recyclate analysis for advanced battery materials), Marine-i, and the UK Shared Prosperity Fund (Cornwall and Isles of Scilly Good Growth Programme).

Revenue is generated through one-time hardware sales (Indi at £129.99, INDIKON quote-based), recurring cartridge sales (£14.99 per replacement), commercial/industrial filtration contracts, and consultancy services. The company has raised approximately £1.46 million across disclosed funding rounds in 2022-2023 (including a Crowdcube equity crowdfunding campaign) and opened the world-first Microfibre Recycling Centre in Bude, Cornwall in June 2025 with capacity to process up to 86 tonnes of microfibres per year using a zero-emission solar- and rainwater-powered process. Achieved B Corporation certification in June 2026; received an Earthshot Prize nomination and Ocean Pitchfest 2023 finalist recognition. Headcount is 1-10 employees and the company ships only within the UK.

Name

Cleaner Seas Group

Legal name

Cleaner Seas Group Ltd

Website

https://cleaner-seas.com

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

1–10 employees

Short description

Cleaner Seas Group develops patented cartridge-based microfibre filtration systems for domestic and commercial washing machines, with a closed-loop return-and-recycle infrastructure. It serves home consumers, cruise operators, hotels, commercial laundries, textile manufacturers, and wastewater facilities across the UK.

Ownership category

akta.pro rank

Product category

Microfibre Filtration Systems

NAICS

Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Measuring, Dispensing, and Other Pumping Equipment Manufacturing (333914)

SIC

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

akta.pro primary industry

Industrial Filtration Media & Dust Collection Textiles (Air/Liquid Filtration) (IMAOADAC)

akta.pro secondary industries

Replacement Filter Cartridges & Consumables (CRAJAJAH), Parts Washing & Degreasing Equipment (IMAHALAD)

Keywords

• Microfibre filtration systems
• Microplastic capture technology
• Laundry wastewater filters
• Circular economy recycling
• Marine pollution solutions

Headquarters

HQ city

Truro

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Product Sales - Indi Home Filter: One-time sale of the Indi Home Microfibre Filter device for domestic washing machines, priced at £129.99. The filter unit is a reusable device with replaceable cartridges.
2. Recurring Cartridge Sales: Replacement filter cartridges sold at £14.99 each, providing recurring revenue. Cartridges are replaced approximately every 6 months and returned through the company's recycling programme.
3. Commercial & Industrial Filtration Solutions: Scalable filtration systems for business customers including cruise ships, hotels, commercial laundries, and textile manufacturers. Solutions include INDIKON professional filter systems with customized industrial integration.
4. Consultancy & Innovation Services: Technical consultancy services for businesses seeking to address microfibre pollution, including filtration integration, sustainability reporting, and circular economy strategy support.
5. Subscription-Based Cartridge Return Service: Business customers receive regular cartridge replacement under subscription model, with casings washed, rebuilt and made available for return under the company's circular model.

Pricing tiers

Go-to-market motion3 records

Distribution channels2 records

Marketing channels6 records

Core offering

Cleaner Seas Group designs, manufactures and sells patented cartridge-based microfibre filtration systems for washing machines, including the Indi Home Microfibre Filter for domestic consumers and the INDIKON Professional Microfibre Filter Systems for commercial and industrial customers. The company operates a closed-loop Return and Recycle Programme, capturing used cartridges and processing the microfibres at its world-first Microfibre Recycling Centre in Bude, Cornwall into sustainable materials with zero emissions.

Product overview

Cleaner Seas Group offers a portfolio of physical filtration products centred on capturing microfibres from laundry wastewater. The core offering comprises the Indi Home Microfibre Filter for domestic consumers and the INDIKON Professional Filter Systems for commercial and industrial clients. Both product lines use replaceable filter cartridges that customers return through the company's Return and Recycle Programme. The captured microfibres are processed at the company's world-first Microfibre Recycling Centre in Cornwall, creating a closed-loop circular economy system. The company also provides consultancy services for businesses across multiple industries including tourism, textiles, and wastewater treatment.

Differentiator

Problem solved

Functional benefit

Brands

• Indi: Home microfibre filter product - a simple plug and play filter for domestic washing machines. Fits onto any domestic washing machine in ten minutes with no plumbing or tools required. Price starts from £129.99.
• INDIKON
• Indi Home Microfibre Filter
• Indi™
• Indikon-1

Products and services

• Indi Home Microfibre Filter A plug-and-play washing machine filter for domestic use that captures microfibres before they enter wastewater. Fits onto any domestic washing machine without tools or plumbing in approximately ten minutes and uses replaceable filter cartridges with a lifetime warranty. Targeted at environmentally conscious home consumers in the UK.
• Refill Filter Cartridge Replacement filter cartridges for the Indi Home Microfibre Filter, sold separately at £14.99 per cartridge. Recommended replacement every 6 months, with used cartridges returned through the company's circular recycling programme.
• INDIKON Professional Microfibre Filter Systems Commercial and industrial scalable microfibre filtration solution designed for high-flow environments such as hospitality, healthcare, cruise ships, and textile facilities. Integrates into existing laundry systems and captures microfibres before they reach drains or the sea. Includes smart-tech functionality with app, data and industrial system syncing. Sold to enterprise customers through a dedicated business portal.
• Microfibre Recycling Centre World-first microfibre recycling facility in Bude, Cornwall that processes captured microfibres into sustainable materials including inputs for EV battery applications. Features zero-emission recycling powered by solar energy and rainwater harvesting. Current capacity processes up to 86 tonnes of microfibres annually, supporting circular economy goals.
• Return and Recycle Programme Closed-loop filter system enabling customers to return used filter cartridges for professional recycling. Cartridge casings are washed, rebuilt and made available for reuse under the company's subscription-based circular economy model. Operates for both home consumers (returning Indi cartridges) and business customers (returning INDIKON cartridges via the dedicated business portal).
• Consultancy and Innovation Services Technical consultancy services for businesses seeking to address microfibre pollution, including filtration integration, sustainability reporting, ESG support, and circular economy strategy advice. Targeted at enterprise customers across tourism, textile, maritime and wastewater sectors.

Quantifiable outcome

• Captures and recycles up to 99% of microfibre pollution from laundry
• +3 more outcomes

Named customers4 records

Segments7 records

Ideal customer profiles7 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Nine partnerships are on record, tiered core, minor and flagship.

• University of PlymouthcoreStrategic or Co-development PartnerResearch partnership for development of Indikon-1 filter technology. University conducted intensive laboratory testing on filter paper performance, washing scenarios, and fibre emissions. Led by the International Marine Litter Research Unit with Professor Richard Thompson OBE.
• Marine-icoreStrategic or Co-development PartnerResearch and development support directing Cleaner Seas Group towards specialist technology research at University of Plymouth for the Indikon-1 product development.
• University of PortsmouthcoreStrategic or Co-development PartnerPartnership for analysis of recycled microfibre materials and creation of one of the UK's first datasets on industrial microfibre pollution at scale for advanced battery materials research.
• University of SurreycoreStrategic or Co-development PartnerResearch partnership analysing how fibre composition in recyclate influences performance in advanced battery materials for EV battery development.
• Simply SustainableminorGTM or Marketing PartnerCo-sponsor with Cleaner Seas Group of the GB Row Challenge endurance rowing race around Great Britain.
• RaymarineminorGTM or Marketing PartnerSponsor of Generation Sea Change docuseries, providing state-of-the-art marine equipment for the expedition vessel.
• Royal Caribbean GroupminorGTM or Marketing PartnerFinancial backer of the Generation Sea Change documentary series and voyage, supporting ocean conservation storytelling.
• Project SeagrassminorOthersEnvironmental charity partnership where Cleaner Seas Group donates 10% of profits to support seagrass conservation when customers purchase filters between specific dates.
• ColdplayflagshipGTM or Marketing PartnerInternationally renowned band supporting Cleaner Seas Group as part of their Music Of The Spheres World Tour sustainability initiatives, providing significant visibility and credibility.

Scale indicators7 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Aquasana: Direct-to-consumer water filtration brand selling under-sink, countertop, and replacement cartridges. Comparable to Cleaner Seas' Indi consumer proposition through cartridge-based filtration products with replacement-consumable economics.

Broad incumbents

• Brita: Global incumbent in household water filtration (pitchers, dispensers, replacement filters). Operates at much larger scale but competes for the same consumer mindshare around home filtration devices and replacement cartridges.
• Veolia Water Technologies: Global water and wastewater treatment major with industrial and municipal filtration offerings. Addresses Cleaner Seas' wastewater treatment works segment with established incumbency in large-scale water treatment.
• Suez Water Technologies: Major water services and treatment operator with industrial filtration capabilities. Competes with Cleaner Seas' INDIKON industrial and wastewater treatment positioning through broader water management portfolio.
• LG Electronics (washing machines): Global washing machine OEM identified as a target customer segment for built-in microfibre filtration integration. Represents both a partnership channel and a competitive threat through in-built filter features.
• LIXIL (Grohe / LIXIL Water): Global water technology major with consumer and industrial water filtration products. Comparable as a broad incumbent with household filtration reach relevant to Indi's consumer channel.

Emerging players

• LifeStraw: Mission-driven water filtration company with strong sustainability/CSR positioning and B Corp-style ethos. Comparable to Cleaner Seas in the consumer water filter category combined with environmental mission branding.
• Xeros Technologies: Polymer-bead textile and filtration technology company focused on reducing water and microfibre impact in commercial laundry. Closest direct comparable in commercial laundry microfibre/pollution technology.
• AquaPor / Microfiber Filtration startups: Several emerging wash-cycle microfibre capture devices and filters compete with the Indi Home product. Represents the emerging competitive set around direct laundry-stage microfibre interception.

Others

• Patagonia: Sustainable apparel brand active in addressing microfibre pollution through textile innovation and advocacy. Comparable as an adjacent downstream buyer in Cleaner Seas' Textiles & Fashion customer segment.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/cleanerseasgp
• Facebookfacebook.com/CleanerSeasGroup
• LinkedInlinkedin.com/company/cleaner-seas-project-co-uk

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds3 records

Investors3 records

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 Cleaner Seas Group