Bespoke Wound Parts Company

Bespoke Wound Parts

Custom Transformers Ltd have over 40 years experience in the design and manufacture of bespoke wound products and coil wound parts.
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Ferrite Transformers Manufacturer

Ferrite Transformers

We offer a complete range of ferrite transformers designed to your specifications, including switch mode, inductors and power ferrite transformers.
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Laminated Transformers UK

Laminated Transformers

We use the most up-to-date designs, materials & manufacturing techniques for a range of laminated transformers designed to high ISO standards.
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Toroidal Transformers

Toroidal Transformers

Over the years we have gained a wealth of expertise in the design and manufacture of toroidal & power transformers for diverse applications.
Toroidal Transformers
Mains Transformer Companies

Mains Transformers

For a variety of mains transformers, including: metric or imperial laminations, split bobbin construction, insulation class “B” 130° C or higher protection as required, do get in touch.
Mains Transformers
Bespoke transformers & coil winding


View our gallery to see the variety of custom wound components and bespoke transformers we have produced over the years.

Welcome to Custom Transformers

Custom Transformers Ltd specialise in the design and manufacture of electrical transformers and wound components including Laminated transformers, Toroidal transformers and Ferrite transformers. The company was formed in Malmesbury in 1972 and now employs a dedicated team, skilled in the design and manufacture of custom transformers and wound components. The company continues to provide customers with products and services built upon its founding principles:

  • A total commitment to quality
  • Effective service provided to all customers, regardless of size
  • A partnership approach – with products designed hand in hand with our customers to ensure they meet exact specifications
Quality Custom Transformer Manufacturers UK


Our comprehensive quality system ensures that quality control is strictly applied at every stage of the design and production process of our electrical transformers and wound components.

Each component batch is subject to routine inspection and each transformer receives 100% final testing.

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Custom Wound Components Manufacturers UK


Custom Transformers have become an established key partner for electrical wound products and transformers to the following industries:

  • Electronic Equipment
  • Machine Tools
  • Oil & Gas
  • Motional Control
  • Alarm Systems
  • Food & Agriculture
  • Marine
  • Hydraulics
  • Military
  • Pneumatics

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