- Adtech Polymer Engineering Ltd.
 - Supplies and manufacturers of specialised fluoro plastic products (eg Teflon) tubing, heat shrink sleeves, welding coiling flanging etc. - Allplas
- Supplies polythene sheeting and plastics for greenhouse insulation, mulching, packaging, and more.
- Jana Enterprises
- Specialises in thermoplastics, light engineering, and industrial models.
- John Moncrieff
- Offers glass, plastics, boiler spares, and graphite products.
- Low and Bonar plc (1)
- Preston Industrial Plastics
- Stockholders and distributors of plastic pipework, building, plumbing, engineering, chemical, and agricultural equipment.
- Stamford Group Ltd, The
- Manufacturers of plastic boxes, trays, pallets, IBCs, containers, medical storage and other rotation or injection mouldings.
- Westward Plastics
- Supplies Wales and the South of England with building, engineering, point of sale, and signwriting plastics.
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