Maen Karne

What Maen Karne does

Maen Karne is a Cornwall-based wholesale supplier of construction materials and related services, serving both commercial customers (builders, merchants, developers, contractors) and domestic DIY customers across the South West of England and, more recently, the wider UK. The company manufactures and distributes ready-mix concrete from BSI-accredited plants at Hayle and Longdowns/Penryn, produces a full range of CE-marked concrete blocks, and supplies bagged and loose primary and secondary aggregates. Its proprietary product, Maen Flow, is a BBA-accredited flowing screed formulated for underfloor heating applications using a binder derived from an industrial by-product. Supporting services include muck shifting and waste disposal, haulage via an owned fleet of bulk tippers, grab lorries, and rigid tippers, and ex-works collection from six depot locations.

The company's technology and operational base rests on integrated manufacturing and logistics infrastructure rather than software: concrete plants, a static blockworks, bagging operations, secondary aggregate processing from china clay waste, and a modern haulage fleet capable of delivering over 1 million tonnes per year across 2 million miles. Maen Karne was founded in 2010–2011 as a roll-up of Eden Aggregates, Western Blocks, and Melbur Blockworks, and was subsequently acquired by GRS (Gateway Records Scotland). The group comprises two operating divisions: Maen Karne Aggregates and Maen Karne Concrete Products (formerly Western Blocks 2010 Ltd).

The business model is direct-to-customer via phone, email, and website, with quote-based pricing, volume discounts, and standard 30-day payment terms. Mixed-load deliveries allow customers to combine product types to reduce transport costs, and free site visits for access assessment are offered. Revenue is generated primarily through one-time sales of aggregates, concrete, blocks, and screed, supplemented by transaction-based haulage and environmental disposal services. The company's GRS ownership and the recent Essex block plant indicate a strategy of regional expansion and product line extension, while its sustainability positioning — concrete blocks from 100% secondary aggregate and a by-product-derived screed binder — is positioned to appeal to architects and developers.

Name

Maen Karne

Legal name

Maen Karne

Website

https://maenkarne.com

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

11–50 employees

Short description

Maen Karne is a UK-based wholesale supplier of construction materials — ready-mix concrete, concrete blocks, bagged and loose aggregates, and proprietary flowing screed — serving commercial contractors and domestic customers across the South West of England and broader UK.

Ownership category

akta.pro rank

Product category

Construction Materials Supply

NAICS

Brick, Stone, and Related Construction Material Merchant Wholesalers (42332)

SIC

Wholesale-Lumber & Other Construction Materials (5030)

akta.pro primary industry

Aggregates Logistics, Terminals & Distribution (IMADAAAK)

akta.pro secondary industry

Construction & Building Materials (TLAIALAL)

Keywords

• Construction materials supply
• Ready-mix concrete
• Concrete blocks
• Aggregates wholesale
• Haulage services

Headquarters

HQ city

Newquay

HQ country

United Kingdom

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Marketing or Sales

Revenue model

1. Aggregates Sales: Sale of bagged and loose primary and secondary aggregates including sands, gravels, chippings, and sub-base materials. Products delivered in bulk bags (~800-1000kg), poly bags (~25kg), or loose loads.
2. Concrete Products: Sale of concrete blocks in various sizes (100mm, 140mm, hollows, dollies, trench blocks, commons) and ready-mix concrete from BSI accredited plants.
3. Haulage Services: Transportation and delivery services using modern fleet of bulk tippers, grab lorries, and rigid tippers. Moving aggregates, china clay, road salt, muck away, and other commodities.
4. Environmental Services: Muck shifting and waste disposal services including grab truck collection, tipper removal, and bulk bag collection for soil, rubble, and contaminated materials.
5. Flowing Screed: Sale of Maen Flow flowing screed with technical support including specification assistance and mix designs.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Maen Karne is a South West England-based wholesale supplier of construction materials manufacturing and distributing concrete blocks, ready-mix concrete, flowing screed, bagged and loose aggregates, and decorative gravels. The company also provides haulage and muck shifting/environmental disposal services, operating BSI and BBA accredited plants and a modern delivery fleet covering the UK.

Product overview

Maen Karne is a construction materials supplier offering a unified portfolio of building products and services. The core offerings include concrete blocks (100mm, 140mm, hollow, trench, dollie, and common bricks), ready-mix concrete and Maen Flow flowing screed, and bagged and loose aggregates. Supporting services include muck shifting with environmental disposal, haulage fleet, and decorative gravels and chippings. Products are sourced and manufactured locally in Cornwall with BSI and BBA accreditation, and the company supplies both commercial contractors and domestic customers across the South West of England.

Differentiator

Problem solved

Functional benefit

Products and services

• Concrete Blocks
• Ready Mix Concrete & Flowing Screeds BSI and BBA accredited locally produced ready-mix concrete and Maen Flow flowing screed for underfloor heating applications, supplied from Hayle and Penryn plants. Suitable for commercial contractors and domestic customers.
• Bagged & Loose Aggregates Primary and secondary aggregates including sand, ballast, sub-base aggregates, drainage aggregates, clean chippings, pipe bedding, decorative aggregates, and gabion stone supplied in bulk bags (around 800-1000kg) and 25kg polythene bags, or as loose loads.
• Muck Shifting & Environmental Services Removal and disposal of materials including green waste, rubble, inert and contaminated soils using grab trucks, rigid tippers, artics, and dumpy bags, with permitted receiver sites for compliant disposal. Bulk muck shift specialist service.
• Haulage Services Modern fleet of bulk tippers including 44 tonne tippers, flatbeds, grab lorries, and rigid tippers for transporting materials including China Clay, Road Salt, Sands, and Aggregates across the UK. Delivers over a million tonnes per year across 2 million miles with full UK coverage from Cornwall to Scotland.
• Decorative Gravel & Chippings Locally sourced decorative gravels and chippings including Polar White, Moon Stone Flint, Granite, Red chippings, Scottish pebbles, Blue/Green/Plum slate, and Cotswold varieties for domestic driveways, paths, and landscaping. Includes environmentally friendly recycled chippings options.
• Sands & Aggregates (Domestic) Wide range of sand, ballast, sub-base aggregates, drainage aggregates, gabion stone, and recycled products for domestic use, including Fine Sand (0-2mm), Ballast, 803/Type 1, and 20mm clean products. Available in bulk bags or for ex-works collection.
• Maen Flow Flowing Screed BBA accredited flowing screed for laying over underfloor heating, quick to apply with superior finish and excellent thermal conductivity. The binder is a by-product of an industrial process making it sustainable. Self-levelling and requires less manpower than traditional sand and cement. Available with technical support including specification assistance and mix designs.

Quantifiable outcome

• Deliver over 1 million tonnes per year across 2 million miles

Named customers3 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

One partnership is on record.

• Maverick IndustriesminorOthersSkatepark specialist contractor that built the Concrete Waves skatepark in Newquay. Maen Karne supplied over 400 cubic metres of ready-mixed concrete from Hayle and Penryn plants for this project.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Tarmac (CRH): One of the UK's largest aggregates and concrete suppliers, owned by CRH. Overlaps directly on aggregates, ready-mix, and screeds, and is a key competitor on UK construction material tenders.
• Aggregate Industries (Holcim): UK's largest aggregates, ready-mix concrete, and asphalt producer, owned by Holcim. Directly comparable product portfolio (aggregates, concrete, blocks) but operates at national scale with materially larger capital base and depots.
• Cemex UK: National supplier of ready-mix concrete, aggregates, and concrete products in the UK. Direct overlap with Maen Karne's ready-mix and aggregates offering, with significant national plant capacity.
• Hanson UK (Heidelberg Materials): National UK producer of aggregates, ready-mix concrete, and concrete blocks, part of Heidelberg Materials. Competes head-to-head with Maen Karne on ready-mix and block supply, with a far larger national network.

Direct peers

• Brett Group: Privately held UK regional aggregates, concrete, and haulage group with multiple depots across the South East. Closest comparable in business model, regional depot footprint, and product mix to Maen Karne.
• Day Aggregates: Independent UK supplier of bagged and loose aggregates serving builders, merchants, and contractors. Closely comparable scale, product focus, and customer base to Maen Karne's aggregates business.
• Grundon: UK family-owned aggregates, waste, and environmental services group. Comparable in combining aggregates supply with muck-shift and haulage services under a regional depot model.

Others

• Huws Gray: UK builders' merchant and supplier of heavyside building materials including aggregates and blocks. Adjacent competitor in the merchant channel that resells many of the same categories Maen Karne produces.
• Jewson (Saint-Gobain): National UK builders' merchant owned by Saint-Gobain, stocking aggregates, blocks, and ready-mix services. Comparable customer base of builders and contractors, though primarily a merchant rather than a producer.
• Travis Perkins: UK's largest builders' merchant serving builders and contractors. Comparable end customers and adjacent position in the construction supply chain, though operates as a merchant rather than a producer.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/MaenKarneConcreteProducts
• Xx.com/maenkarne
• LinkedInlinkedin.com/company/maen-karne-aggregates-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 Maen Karne