G Stow

What G Stow does

G Stow is a UK-based specialist water engineering and drilling contractor founded circa 1920, operating as a wholly-owned subsidiary of South Staffordshire Group (itself 100% owned by pension funds and institutional investors managed by Arjun Infrastructure Partners). The company provides a comprehensive suite of services spanning the water asset lifecycle — consultancy, geophysical and CCTV surveys, borehole drilling and construction, borehole cleaning and maintenance, test pumping, adit design and construction, aquifer storage and recovery, and full mechanical and electrical (M&E) services — delivered through multiple depots and offices throughout the UK on a 24/7, 365-day basis.

Its core technology centers on specialist drilling and underground water access capabilities, including pioneering techniques in aquifer storage and recovery, expert adit driving and repair, geothermal borehole drilling for ground source heat pumps, and CCTV-based borehole inspection. It also supplies and installs pumps, switchgear, distribution pipelines, water storage tanks, and its ZSM stainless steel rising main systems. Revenue is generated primarily through project-based contracts across three verticals: water utilities and municipalities, the renewable energy sector (geothermal), and industrial and commercial clients, with a mix of one-off project revenue, equipment supply, and recurring maintenance and emergency service streams.

G Stow pursues a specialist enterprise field sales model, marketing through its website, industry events such as The Water Equipment Show (in partnership with Wilo), and membership in The Well Drillers Association. Pricing is quote-based and project-specific. The company operates as part of the larger South Staffordshire Group, which enables cross-selling of complementary source-to-tap services including water treatment, pipeline contracting, leak detection, pipeline inspection, corrosion assessments, material testing, and smart metering solutions.

Name

G Stow

Legal name

G Stow

Website

https://gstowplc.com

Company type

Private

Founded year

1920

Operating status

Operating

Headcount range

1–10 employees

Short description

G Stow is a UK specialist water engineering and drilling contractor providing borehole construction, geothermal drilling, aquifer storage and recovery, adit services, and full M&E support to water utilities, renewable energy developers, and industrial clients across the UK and 30+ countries.

Ownership category

akta.pro rank

Headquarters

HQ city

Wallingford

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Water Engineering Services: Comprehensive water engineering services including consultancy, feasibility studies, geophysical surveys, drilling, construction, and maintenance. Revenue is generated through project-based contracts for water supply boreholes, geothermal systems, and related infrastructure.
2. Equipment Supply and Installation: Supply and installation of pumps, switchgear, water storage tanks, and distribution pipelines. One-time revenue from equipment sales and installation services.
3. Maintenance and Emergency Services: Ongoing maintenance programs, borehole cleaning, test pumping, and 24/7 emergency support services generating recurring service revenue.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

G Stow is a specialist borehole engineering and drilling contractor that designs, constructs, and maintains water supply boreholes, geothermal boreholes, adits, and associated water infrastructure including pumps, switchgear, distribution pipelines, and water storage tanks. The company delivers a complete mechanical and electrical service covering consultancy, feasibility, geophysical surveys, drilling, construction, testing, and 24/7 maintenance and emergency response for water utilities, renewable energy projects, and industrial clients.

Product overview

G Stow is a specialized water engineering and drilling company offering a comprehensive suite of services for the water sector. The portfolio centers on core drilling services including borehole drilling for water supply and geothermal applications, complemented by specialized offerings such as aquifer storage and recovery, adit design and construction, and CCTV inspection surveys. The company provides complete mechanical and electrical (M&E) services covering the full project lifecycle from consultancy and feasibility through to construction, testing, and maintenance. Key product systems include the ZSM Stainless Steel Rising Main Systems. Services are delivered through multiple depots and offices throughout the UK as part of the South Staffordshire Group, with recent additions including pump storage solutions announced in 2025.

Differentiator

Problem solved

Functional benefit

Products and services

• Borehole Drilling Specialist drilling and construction services for water supply boreholes, delivered to water utilities, municipalities, and industrial clients using the firm's century of drilling expertise.
• Geothermal Drilling / Ground Source Heat Pump Boreholes Geothermal borehole drilling for ground source heat pump systems, serving renewable energy developers and installers of ground source heating infrastructure.
• Borehole Cleaning and Maintenance Specialist cleaning and maintenance services for existing boreholes to ensure reliable operation and longevity of water assets.
• Borehole Test Pumping Test pumping and measurement services for borehole assessment and water yield analysis.
• Borehole Pump Efficiency Testing Pump efficiency testing services to assess and optimise borehole pump performance for asset owners.
• CCTV Surveys CCTV inspection surveys for boreholes and underground infrastructure assessment.
• Adit Design and Construction Expert adit driving and repair services; G Stow is recognised for its expertise in this specialised area of underground water access infrastructure.
• Aquifer Storage and Recovery

Quantifiable outcome

• Operating capability 24/7, 365 days a year

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered minor.

• WilominorGTM or Marketing Partner · 1 April 2026Partnership for The Water Equipment Show where G Stow will attend as an exhibitor alongside Wilo, a water technology company.
• The Well Drillers AssociationminorOthersIndustry membership organization for water well and borehole drilling professionals. G Stow is a member, indicating industry standing and adherence to professional standards.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Costain Group: Costain Group is a major UK infrastructure contractor with significant water sector expertise, serving water utilities with integrated engineering services. Broad incumbent with overlapping capabilities in water infrastructure construction but operating across much broader infrastructure portfolios than G Stow's specialist drilling focus.
• Arcadis: Arcadis is a global design and consultancy firm with UK water infrastructure expertise, providing engineering and advisory services to water utilities. Broad incumbent in the same industry with overlapping capabilities around water infrastructure strategy and design, but broader portfolio and no specialist drilling focus.
• Stantec: Stantec is a global engineering firm with significant UK water infrastructure expertise, providing design, consulting, and engineering services to water utilities. Broad incumbent with comparable customer focus but larger scale and broader portfolio across the full water infrastructure lifecycle.
• Keller Group: Keller Group is a UK-based ground engineering specialist providing geotechnical solutions including drilling, piling, and foundation work. Broad incumbent with overlapping drilling and ground engineering capabilities applicable to water infrastructure projects, but operating at much larger scale across broader ground engineering markets.
• AtkinsRéalis: AtkinsRéalis (formerly WS Atkins) is a global engineering consultancy with extensive UK water sector work, providing design, advisory, and project management services to water utilities. Broad incumbent serving the same UK water utility customer base but with much wider service breadth and no specialist drilling focus.
• Mott MacDonald: Mott MacDonald is a global engineering consultancy with deep UK water sector expertise, providing advisory, design, and project management services for water utilities and infrastructure. Broad incumbent operating in the same customer space but with much wider service breadth and no specialist drilling operations.

Direct peers

• Stuart Group: Stuart Group is a UK well drilling company providing water well drilling, borehole maintenance, and pump installation services. Direct peer to G Stow in the UK specialist water well and borehole market with closely aligned offerings and similar customer segments.
• WJ Groundwater: WJ Groundwater is a UK specialist in groundwater management, dewatering, and water well services. Provides comparable groundwater engineering services and infrastructure support to G Stow's water engineering portfolio across similar UK utility and construction customers.
• WB Morgan: WB Morgan is a UK-based drilling contractor specializing in water wells, geothermal drilling, and environmental drilling projects. They are a direct peer to G Stow in the UK borehole drilling and water engineering market with closely overlapping service offerings and target customer base.
• Dando Drilling International: Dando Drilling International is a UK-based drilling equipment manufacturer and drilling services provider for water wells, geotechnical applications, and mineral exploration. Direct peer with overlapping drilling technology, equipment, and field service capabilities to G Stow.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/g-stow-plc

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 G Stow