Building Stone

What Building Stone does

Building Stone Ltd is the processing and masonry arm of Johnston Quarry Group, itself a subsidiary of London-listed SigmaRoc plc, operating quarries and processing facilities in the Cotswolds and Oxfordshire. The company extracts, processes, and supplies English natural limestone (Cotswold Oathill and Guiting, Bath Stone, Creeton) and ironstone (Great Tew) for use in residential construction, conservation, and landscaping. Product range covers commodity items — bagged B-grade stone, walling, and dry stone — alongside higher-specification outputs including ashlar, coursed building stone, mixed building stone, and a bespoke masonry service that combines five-axis CNC profiling with hand-finished stonemason work for project-specific cuts. Heritage is a defining feature, with quarrying operations traceable to the 1600s, and Building Stone holds exclusive supply rights to Great Tew Ironstone.

The company serves a diversified B2B and B2C customer base that includes regional housebuilders such as Duchy Homes and Ashford Homes, architects, conservation contractors, stone masons, private homeowners undertaking renovations, and commercial clients such as Tadmarton Heath Golf Club. Distribution is dual-channel: direct project sales supported by a trade-yard partnership with MKM Building Supplies, plus an export program delivering to more than 11 countries including Ireland, Japan, Singapore, the USA, Brazil, and Hong Kong. Recent capital deployment — the 2020 acquisition of Stanleys Quarry, investment in Fantini JCB Chainsaw extraction equipment, a new tumbling line, and five-axis profiling — is aimed at widening the product mix toward higher-margin aged and precision-cut stone rather than scaling commodity tonnage.

Name

Building Stone

Legal name

Building Stone LTD

Website

https://buildingstone.co.uk

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Building Stone is a UK natural stone quarrying and masonry business, part of Johnston Quarry Group within SigmaRoc plc, supplying English limestone and ironstone products to housebuilders, conservation contractors, architects, and private clients domestically and in 11+ export markets.

Ownership category

akta.pro rank

Product category

Natural Stone Products

NAICS

Cut Stone and Stone Product Manufacturing (327991), Dimension Stone Mining and Quarrying (212311), Stone Mining and Quarrying (21231)

SIC

Cut Stone & Stone Products (3281), Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400)

akta.pro primary industry

Limestone Quarrying (Industrial & Construction Grade) (IMAKAHAC)

akta.pro secondary industries

Other Dimension Stone (Slate, Sandstone, Quartzite, Travertine) Quarrying & Fabrication (IMAKAHAF), Stonework & Masonry (Stone Veneer, Brick, Block) (HSAIACAI), Masonry & Hardscapes Retail (Brick, Block, Pavers, Stone) (CRAIAEAF)

Keywords

• Natural stone supply
• Building stone products
• Stone masonry services
• Dimensional limestone supply
• Architectural stone manufacturing

Headquarters

HQ city

Chipping Norton

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Natural stone product sales: Sale of dimensional block stone, building stone, walling stone, and processed stone products. Products include ashlar, coursed building stone, mixed building stone, random rough dressed walling, dry stone walling, and B-grade bagged stone. Revenue is generated from product sales to builders, architects, developers, and private clients, ranging from single pallet orders to large multi-build housing development contracts.
2. Stone masonry products and bespoke manufacturing: Design, manufacture, and supply of bespoke masonry products including architectural stone, balustrades, columns, capitals, chimney stacks, cills, coping stones, fireplaces, gate piers, quoins, staircases, and finials. Full supply, manufacture, and delivery service from window surrounds to copings.
3. Stone fireplace fitting service: Stone fireplace fitting service carried out by experienced fixing masons, as a professional service alongside product supply.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Building Stone quarries, processes, and supplies English natural limestone and ironstone building products, walling stone, and bespoke architectural masonry for builders, developers, architects, masons, and private clients. The company offers dimensional block stone, coursed, mixed, random rough dressed, and dry stone walling products, plus a full masonry service covering balustrades, columns, capitals, chimney stacks, fireplaces, gate piers, staircases, and architectural stonework from design through manufacture to fitting.

Product overview

Building Stone is a natural stone production and masonry company offering a comprehensive portfolio of stone products and masonry services. Their core offerings include building stone products (Ashlar Stone, Coursed Building Stone, Mixed Building Stone, B-grade Bagged Stone, Random Rough Dressed Walling, and Dry Stone Walling) and stone masonry products (Stone Balustrades, Capitals, Chimney Stacks, Cills, Columns, Finials, Fireplaces, Gate Piers, Quoins, Staircases, Coping Stones, and Architectural Stone). They supply various stone types including Ironstone (Great Tew), Limestone varieties (Guiting Cotswold, Oathill Cotswold, Creeton Hard White, Creeton Silver Bed, Creeton Banded, and Stoke Ground Bath Stone in Top Bed and Base Bed). The company operates as the processing and masonry arm of Johnston Quarry Group, supplying dimensional block stone, building stone, walling stone, and architectural masonry stonework for residential, commercial, and restoration projects throughout the UK and internationally.

Differentiator

Problem solved

Functional benefit

Products and services

• Ashlar Stone Large rectangular blocks of stone sculpted with square edges and even faces for high-quality finishing. Smooth sawn, six-sided, and hand rubbed during the manufacturing process. Available in Great Tew ironstone, Bath, Guiting, Oathill, and Creeton limestones for builders, developers, and architects.
• Mixed Building Stone Rough dressed limestone in cream and gold colours, popular in conservation areas and Areas of Outstanding Natural Beauty for contemporary and traditional projects. Supplied rough dressed with hand-picked random lengths.
• Coursed Building Stone Natural limestone and Hornton Ironstone supplied in a range of sizes and finishes. Nominally 100mm thick with standard course heights of 65mm, 90mm, 115mm, and 140mm. Available as Sawn, Split and Tumbled, or Sawn and Split, with minimum production capacity of 1,000 m² per week.
• B-grade Bagged Stone Bagged 2nds in Ironstone only, comprising stones that pass through the building stone process but fall short of premier Hornton Ironstone grade. Random course heights and lengths make this an ideal landscaping product for garden walls.
• Random Rough Dressed Walling Stone supplied in irregular bed heights, often chosen where a more rustic look is desired for building and landscaping projects.
• Dry Stone Walling Wall stone constructed without mortar, held up by interlocking of stones. Used in building construction or as field boundaries. Supplied direct from Oathill and Guiting Quarry.
• Stoke Ground Bath Stone - Top Bed Finely grained, exceptionally consistent limestone with pale cream or buff colour that mellows to honey. Produced from the mine at Limpley Stoke near Bath, suitable for carving, ashlar walling, and fireplaces, with an unusually high bed height of up to 1,600mm.
• Stoke Ground Bath Stone - Base Bed Light buff/grey slightly open grained limestone with small intermittent shell deposits. Ideal for exposed and weathering areas such as cornices, coping, and string courses. Mined at approximately 15m below ground.
• Guiting Cotswold Stone Distinctive slightly darker golden or honey colour with medium grain typical of Cotswold towns and villages. Unusually large block sizes with block heights up to two metres and individual sizes up to 14 tonnes.
• Oathill Cotswold Stone Distinctive slightly darker golden or honey colour with medium grain typical of Cotswold towns and villages. Large block sizes with heights up to two metres and individual sizes up to 14 tonnes.
• Creeton Hard White Pale white limestone with minimal fossil content, bringing warmth and elegance to homes or projects.
• Creeton Silver Bed Fine grained limestone with creamy off-white colour, named from small clusters of fossiliferous shells and mineral veining giving the impression of flecks of silver.
• Creeton Banded Lincolnshire Clipsham-style stone with honey to cream colour and medium grain texture, named for its attractive patina and intermittent banding.
• Great Tew Ironstone Great Tew Ironstone (The Marlstone Rockbed) with distinctive deep orange-brown colour and occasional patches of white mineralisation and marbling. Found throughout North Oxfordshire, Northamptonshire, through to Rutland.
• Stone Balustrades Natural stone balustrades for creating balconies or grand stairways. Suitable for indoor and outdoor projects across commercial and residential applications.
• Stone Capitals Architectural stone capitals adding detail to columns or pedestals, providing structural support by broadening the column's supporting surface and dispersing weight over a larger area.
• Stone Chimney Stacks Range of stone chimney stacks ideal for new build, restoration, or extension projects. Bespoke design, craft, and delivery service available.
• Stone Cills Oolitic limestone and ironstone cills as finishing detail for any property. Available in a range of standard sizes for windows and bays.
• Stone Columns Stone columns in a variety of designs using stunning limestones and exclusive north Oxfordshire ironstone. Options include Roman, Greek, Corinthian, or contemporary designs.
• Stone Finials Traditionally placed on top of gate piers and posts, stone finials add a finishing touch to any gateway. Available in a range of stone choices, shapes, and sizes.
• Stone Fireplaces Hand carved natural stone fire surrounds with a fully comprehensive service from design through manufacture and delivery. A bespoke stone fireplace fitting service is available, carried out by experienced fixing masons.
• Stone Gate Piers Designed to support gates or define an entrance, adding a sense of grandeur to any driveway or pathway approach. Range of plain and moulded natural stone gate piers in various designs and sizes.
• Stone Quoins Stone quoins framing or adding architectural interest to building projects. Options include return quoin, reveal quoin, chamfered quoin, and plain quoin in various limestones and ironstone.
• Stone Staircases Bespoke stone staircases designed as spiral, cantilever, or floating stone staircases. Available in Great Tew Ironstone or Oolitic limestones.
• Coping Stones High-quality coping stones for finishing new or existing walls. Available in a variety of beautiful limestones and ironstone with flat, once weathered, or twice weathered finishes.
• Architectural Stone Full range of worked stone detailing from architectural drawings or hand sketches. Feature worked stonework including window surrounds, porches, canopies, porticos, or intricate stonework for residential, commercial, and restoration projects.
• Bespoke Stone Products Highly skilled craftsmen create a multitude of bespoke stone products for restoration projects, unique new-build developments, or complementary pieces. Includes decorative stone garden products such as bird baths, water features, sun dials, stone furniture, and staddle stones.

Quantifiable outcome

• Minimum production capacity of 1,000 square metres of coursed building stone per week
• +2 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Johnston Quarry GroupcoreStrategic or Co-development PartnerBuilding Stone is the processing and stone masonry arm of Johnston Quarry Group. The parent group owns and operates quarries at Creeton and Rospley in Lincolnshire, Stoke Hill near Bath, and Guiting and Oathill in Gloucestershire. Building Stone operates as the group's processing and masonry division, providing finished stone products from the group's quarry outputs.
• SigmaRoccoreStrategic or Co-development PartnerBuilding Stone is part of SigmaRoc, a quoted lime and minerals group operating across the UK and Northern Europe. SigmaRoc specialises in lime, aggregates, industrial minerals, and value-added construction materials. Building Stone sits within the UK & Ireland Region.
• MKM Building SuppliesminorChannel Partner/ Reseller/ DistributorBuilding Stone worked alongside the Leamington Branch of MKM Building Supplies to deliver the Duchy Homes development of 21 luxury Cotswold Stone homes in Chipping Campden. MKM Building Supplies distributed the stone products as part of the project supply chain.

Scale indicators5 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Polycor: North America's largest natural stone quarrier producing granite, limestone, and marble for building, restoration, and architectural masonry. Comparable as a multi-quarry, multi-stone-type dimensional stone producer with global distribution.
• CEMEX: Global building materials heavyweight producing aggregates, cement, concrete, and related architectural products. Represents the broader competitive set Building Stone competes against (or alongside) for facade and hardscape specification in large projects.
• Levantina: Spanish multinational quarrying and supplying marble, granite, limestone, and other natural stones worldwide. Overlaps with Building Stone in international natural stone supply to construction and architectural projects.
• CSR Limited (Brickworks): Australian/listed building materials group with natural stone, brick, and masonry product lines. Comparable as a diversified incumbent with overlapping masonry and architectural stone offerings, particularly relevant given Building Stone's export activity.
• Marshalls plc: LSE-listed UK hard landscaping and building products group offering natural stone alongside concrete and porcelain ranges. A broader incumbent with overlapping natural stone products but serving the wider construction/landscaping market.

Direct peers

• Albion Stone: UK Portland limestone quarry operator producing dimensional and masonry stone products for building, restoration and architectural use. Highly comparable as a vertically integrated UK dimension-stone specialist serving builders, masons, and architects.
• Johnsons Wellfield Quarries: Craven-arm limestone quarry and masonry producer supplying UK building stone, ashlar, and architectural masonry. Direct competitor to Building Stone in the UK heritage and new-build limestone market.
• Indiana Limestone Company: US producer of dimension limestone for building facades, ashlar, and architectural applications. Directly comparable as a heritage limestone quarry operator with established architectural masonry product lines.

Regional players

• Hardscape: UK supplier of natural stone paving, setts, walling, and landscaping products. Comparable as a UK-focused natural stone distributor addressing overlapping residential, commercial, and landscaping customer segments.
• Vetter Stone: US Midwest limestone quarry producing architectural and building stone for residential, commercial, and institutional projects. Comparable as a heritage limestone dimension-stone producer serving overlapping building-masonry applications.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/buildingstoneuk

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Building Stone