Fuel Tank Manufacture

Designing and building compliant, future-ready fuel storage solutions for every sector.

Bespoke, Compliant and Expertly Engineered Fuel Tank Manufacture

For over 50 years, OTS Group has designed and manufactured bunded steel fuel tanks for clients in the UK and Europe.

From commercial refuelling and marine operations to data centres and emergency power systems, our fuel tank manufacturing expertise enables us to create tanks that meet the precise needs of each project safely, efficiently, and in full compliance with UK standards.

Our manufacturing facility in Gloucestershire is home to a highly skilled team of fabricators, welders, and engineers who work with the latest equipment to deliver fuel tanks and fuel storage systems of exceptional quality and durability.

At OTS, we don’t just build tanks, we engineer complete storage solutions.

Each project begins with a consultation to understand your requirements, fuel type, site conditions, and operational demands. Our in-house design team then produces bespoke CAD drawings and fabrication plans to achieve optimal performance, safety, and longevity.

All tanks are manufactured under ISO 9001 quality systems and certified to OFS T200, BS 799-5:2010, and CIRIA C736 guidelines.

Fuel Tank Design and Engineering

Our manufacturing capabilities include:

Precision steel cutting, rolling, and welding
Non-destructive testing (NDT) and hydrostatic testing
Internal and external protective coatings
Pressure, leak, and bund integrity testing
Full documentation for QA and compliance

OTS manufactures a wide range of above-ground steel fuel tanks for different environments and applications. Each tank is custom-built to specification, with options for shape, size, capacity, access, and integration.

Types of Fuel Tanks we Manufacture

Rectangular Tanks

Built for flexibility and tailored design, OTS rectangular tanks are ideal for depots, forecourts, and fixed-site installations where layout and space optimisation are key.
Available as single or multi-compartment units, each tank is fully bunded, constructed to OFS T200 standards, and engineered for long-term performance in demanding environments.

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Cylindrical Tanks (Express – Manufactured in 8 Weeks)

Our cylindrical tanks are precision-engineered for rapid deployment and operational reliability. Suitable for a wide range of applications including bulk fuel storage, generator supply, and wet depot installations, these tanks are available through OTS’s 8-week express manufacturing programme.

Cylindrical Tanks
Structural Slab Tanks

Our structural slab tanks are designed for high-load and mission-critical environments such as data centres and other essential infrastructure.
The low-profile design supports heavy structures above while safely storing fuel below, enabling dual use of space without compromising safety or compliance.

Slab Tanks
Containerised Fuel Stations (MultiServ™)

Available in compact or full-scale configurations, the MultiServ™ offers the flexibility of a mobile forecourt with the durability of a permanent installation.
Each unit can be fitted with integrated pumps, dispensers, filtration, and recirculation conditioning systems, enabling multi-vehicle refuelling and compatibility with EasyFuel+ and Jigsaw fuel management technology.

Containerised Fuel Stations
Vehicle Refuelling Tanks

We manufacture tanks for commercial truck stops, distribution depots, and homebase fleet refuelling operations.
These tanks can be supplied as standalone units or integrated into complete refuelling systems, with pipework to island dispensers and fuel management integration for accurate control and reporting.

Vehicle Refuelling Tanks
Marine & Offshore Tanks

Specially fabricated for marinas, ports, and offshore platforms, these tanks feature enhanced corrosion protection and marine-grade coatings for long service life in demanding conditions.
Designed to meet stringent environmental and safety regulations, they are ideal for coastal and offshore applications.

Marine & Offshore Tanks
Wet Depot & Bulk Storage Tanks

High-capacity tanks for fuel distribution depots, logistics hubs, and wholesale operations.
Each tank is built for reliability and ease of access, with options for automated level gauging, remote monitoring, and integration with fuel management systems.

Wet Depot & Bulk Storage Tanks
Fuel Storage for High Risk Areas (SecuriTank™)

The SecuriTank™ range provides enhanced physical security for sites where tamper resistance and asset protection are critical.
Each unit is OFS T200-certified and designed to support DSEAR compliance, with reinforced cabinet construction, tamper-resistant access, and protected pipework for total peace of mind.

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Bespoke and Specialist Applications

From multi-fuel or dual-purpose systems to integrated bunds and custom dimensions, OTS can design and build fuel tanks for virtually any application.
Our engineers regularly develop innovative solutions such as structural slab tanks for data centres and integrated systems for low-carbon fuels like HVO.

Bespoke and Specialist Applications

We maintain complete control of every stage of production within our Gloucestershire facility:

Consultation and design - understanding operational needs and creating detailed CAD drawings.
Fabrication and welding - precision cutting and assembly using certified materials and processes.
Testing and inspection - non-destructive testing, hydrostatic testing, and bund integrity verification.
Coating and finishing - anti-corrosive finishes and bund linings applied for long-term protection.
Delivery and installation support - nationwide logistics with crane-assisted delivery and site installation by qualified engineers.

The OTS Manufacturing Process

Every OTS tank is designed and built to meet or exceed industry regulations, including:

OFS T200 (OFTEC)
BS 799-5:2010
DSEAR 2002
CIRIA C736
ADR 2019 (transport of dangerous goods)
ISO 9001:2015 Quality Management

All tanks are fully bunded and supplied with compliance documentation, test certificates, and maintenance recommendations.

Compliance and Certification

Our tanks are in operation across a wide range of sectors:

Logistics and distribution – refuelling and bulk storage
Data centres – generator base and structural slab tanks
Marine and offshore – fuel and oil storage
Construction and plant – mobile refuelling
Agriculture – secure bulk fuel storage
Power and utilities – standby generation
Government and military – secure bulk fuel storage

Industries we Serve

Why Choose OTS Group for Fuel Tank Manufacture

At OTS, we combine engineering expertise with end-to-end support to provide clients with lasting value. Here’s what sets us apart:

Want to learn more about the standards and features that matter when choosing a supplier? Read our guide to the top 7 features to look for in a fuel tank manufacturer.

All tanks are designed and built to ISO 9001, OFTEC, and OFCERT (OFS T200) standards, with compliance to DSEAR, CIRIA C736, and BS 799-5.
With more than five decades in business, we’ve delivered tanks for organisations including Tesco, Certas, the NHS, and Total.
Our Gloucestershire factory follows strict quality controls, using high-grade steel, precision welding, and non-destructive testing to ensure durability and safety.
From bespoke design and manufacture through to installation, fuel management integration, cleaning, uplift, and decommissioning, OTS covers the full lifecycle.
Certified bunded designs, lifecycle maintenance, and licensed waste handling protect both your site and the wider environment.
Planned Preventative Maintenance (PPM), rapid-response callouts, and fast access to spare parts keep your systems running.
Our solutions support Automatic Vehicle Identification (AVI), real-time fuel management, and compatibility with low-carbon fuels such as HVO, GLT, and biofuels.

Fuel Tank Manufacturing FAQs

What sizes of fuel tanks can OTS manufacture?

We manufacture tanks from small-capacity units under 5,000 litres to large-scale systems exceeding 100,000 litres. Each is custom-built to your required footprint, volume, and site conditions.

How long does it take to manufacture a fuel tank?

Lead times depend on tank size, specification, and current production schedules. Standard tanks can often be completed within 8 weeks, while complex or bespoke projects may take longer. Our team will confirm timeframes at quotation stage.

Can you help with design approval or compliance documentation for planning?

Yes. OTS can supply full design drawings, structural calculations, and compliance documentation to support planning or regulatory approval processes before manufacture begins.

Do you offer delivery and installation outside the UK?

Yes. While most of our work is UK-based, we can export completed tanks and systems to Europe and beyond. All tanks are designed and tested to UK and EU standards, ensuring full international compliance.

Are OTS tanks compatible with HVO and other alternative fuels?

Yes. All tanks can be configured for HVO, GTL, and other renewable fuels using compatible materials, coatings, and seals to prevent degradation and ensure long-term reliability.

What is the lifespan of an OTS manufactured tank?

With correct installation and planned maintenance, our bunded steel fuel tanks typically have a design life expectancy of 20-30 years. Many clients extend lifespan further through regular PPM and protective re-coating.

Can OTS manufacture multi-compartment or twin-fuel tanks?

Yes. We regularly design and build dual or multi-compartment systems to store different fuel types safely within a single bunded structure, complete with separate fill and dispensing systems.

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