About Us

Les Williams graduated in Electrical Engineering at Leeds University and was initially employed as a research engineer by Morgan Crucible Ltd, he then joined Metropolitan Vickers Ltd. - a subsidiary of Associated Electrical Industries - part owned by General Electric of America - as a graduate apprentice. With A.E.I. for 26 years he rose to be Commercial Director of Micanite & Insulators Ltd. - a leading manufacturer of Electrical Insulation and subsidiary of Metropolitan Vickers Ltd.  On being made redundant on the take-over of A.E.I.  by G.E.C. he, along with his wife Ruth and two sons Mark and Philip, formed Les Williams & Co. (Electrical  Insulation) Ltd. a small and highly successful family company now employing three generations of the family.

Les Williams & Co. (Electrical Insulation) Ltd. was setup in 1972 to meet the perceived demand of fabricated components from Electrical Insulation laminates and established the business on a firm financial base by providing a prompt and efficient service, in the knowledge that the Insulation components are of vital importance to the end product.

The potential markets were researched with a view to development of a range of proprietary products for use in the manufacture of transformers and the control panel sectors. A wide range of mechanically interlocked transformer bobbins was designed, developed and fabricated, for transformer winding.

From a background of experience in one of the largest Electrical Insulation manufacturers in the country; a comprehensive knowledge of application and design using insulation materials in the Electrical Engineering industry and the required skills in machining, a wide range of components and materials are available.

Support & Advice

We will advise our clients on the selection of suitable insulation material in the application required, and we specialise in the making of prototypes for bulk production, using years of experience in the Electrical Engineering industry and taking into account the practicalities of machining and assembly.

Our Products

We specialise in the conversion of electrical insulation laminates into components used throughout the Electrical Industry, using laminates commonly known as SRBP, SRBF & SRBG (Synthetic Resin Bonded Paper, Fabric & Glass) and Random Glass Matt commonly known as PGM (Polyester Glass Matt).

We can supply large or small volume orders, or single cut pieces and panels and sheet materials from our extensive stocks. We also have full on-site machining facilities and can provide components to your drawing, specification or sample.

Our Services

We offer full on-site cutting, punching, drilling, slotting and shaping to tolerance. CNC milling and turning machining facilities, to manufacture components to your drawing, specification or sample including prototypes. Please don't hesitate to contact us if you have any specific or unusual requirements.

Comprehensive Stock

We hold a comprehensive stock of sheet laminates, SRBP (Synthetic Resin Bonded Plastic), PGM (Polyester Glass Matt), GPO3, Angles, Channels, Screwed Rod and Dog bone.


Our manufacturing flexibility enables us to produce standard or customised products in batch quantities of any size. We are continually working with our customers in developing new products designed to fit their particular needs and we are continually looking to extend our machining capability and are more than happy to discuss developing new products to fit your needs.

Finished Components

In addition to stock items, we have the facility for cutting, screen printing, varnishing and machining into finished components on the latest CNC equipment, and conventional machines.