17D Ltd – Precision Engineering for 5" & 7¼" gauge Miniature Railways

17D Limited is the UK’s specialist manufacturer and supplier of miniature railway rolling stock, locomotive components, and precision-machined parts. From our base in Derbyshire, we proudly serve model engineers, hobbyists, and miniature railway clubs throughout the UK and beyond.

Whether you’re building a 5 inch, 7¼ inch locomotive, building rolling stock, or sourcing custom-made parts, our workshop delivers quality, accuracy, and reliability. With a background in model engineering and CNC precision machining, 17D Limited provides everything from ready-to-run coaches and wagon kits to bespoke valve gear, buffers and wheel-sets. To start shopping, select a Category from the menu bar above.

About 17D Limited

At 17D Limited, we specialise in ride-on miniature railway equipment across 5″, 7¼″, and 10¼″ gauges. Every product is designed and built in the UK to meet the standards of model engineers who value detail, scale accuracy, and robust performance. Our engineering team brings together decades of hands-on experience in steam, diesel, and ....read more

Rolling Stock & Kits

At 17D Limited we take pride in offering an exceptional range of rolling stock kits — especially our highly-regarded wagon kits — meticulously engineered for the 5-inch, 7¼-inch (7.25″) miniature railway market. Whether you’re building open wagons, well wagons, box vans, or brake vans, our kits deliver scale accuracy, ease of assembly, and robust track performance.

Wagon Kits for 7¼-inch (7.25″) Gauge

Our 7.25″ gauge wagon kit range includes a bolt-and-rivet together construction system and covers designs such as 5-plank wagons, 7-plank wagons, well wagons (including the GWR/BR Loriot-M), box vans, brake vans, and more. These kits typically feature laser-cut wooden body parts, pre-fabricated sub-frames, and carefully curated rolling chassis components — allowing builders to assemble with confidence.

Wagon Kits for 5-inch Gauge

For the 5″ gauge enthusiast, there’s a similarly comprehensive selection: 5-plank wagon kits, 7-plank kits, banana box vans, tipplers, and complete rolling chassis kits. Each is supplied with laser-cut and pre-folded body components, etched plank detailing, and a choice of wheelbase options (9ft or 10ft) for extra flexibility. This range enables model engineers to achieve professional-quality wagon assemblies at a hobby-friendly level.

Other Rolling Stock: Coaches, Driving Trucks & Spare Parts

Beyond wagons, our catalogue also includes coaches, driving trucks, and wagon-specific spare parts. The full rolling stock range caters to both kit builders who enjoy the assembly process and those seeking ready-to-run solutions.

Why Our Railway Models Stand Out

• Scale fidelity & authenticity: Realistic proportions with laser-cut or pre-folded components to reduce build time while preserving fine detail.
• Modularity & choice: Wheelbase options, chassis-only kits, or full rolling kits to suit every project and budget.
• UK-based manufacturing & support: Quality control, compatibility with British gauges, and direct technical advice from our engineering team.

Whether you’re expanding a 7¼″ gauge fleet with historically inspired wagons or building a compact 5″ gauge layout with versatile tippler or box van kits, 17D Limited has the rolling stock foundation to bring your miniature railway project to life.

Locomotive Parts & Components

We offer precision-engineered steam and diesel locomotive parts, including cylinders, motion gear, bogies, wheel-sets, and axle components. Our BR Standard parts and custom designs are trusted by builders throughout the UK model engineering community.

In addition, our in-house CNC machining facilities allow for bespoke designs, repair work, and small-batch production to meet the needs of restoration and new build projects alike.

Custom Machining & Fabrication

Need a one-off solution? Our bespoke machining service covers CNC-machined parts, wheels, couplings, buffers, and more — all produced to the same exacting standards as our in-house range. From prototype development to heritage restoration, we provide tailored engineering support that keeps your miniature railway running smoothly.

Why Choose 17D Limited

• UK-based manufacturer specialising exclusively in miniature railway products
• Complete range for 5″, 7¼″, and 10¼″ gauge enthusiasts
• In-house design, CNC machining, and assembly facilities
• No minimum order — ideal for individual model engineers and clubs
• Fast, friendly service with worldwide shipping

Get in Touch

Ready to order or need expert advice on your next project? Visit our Online Shop to browse the full catalogue, or Contact Us for bespoke machining and technical support.

17D Limited – Precision-engineered components for miniature railways, built in the UK and trusted worldwide.