Gutters and accessories, glass fibre reinforced plastic (GRP) in United Kingdom
- A Walker U P V C
- Drainage Castings - S J C Ltd
- Bedford Building Plastics
- Impress North East Ltd
- K N G Developments
- Coe's Derby Ltd Engineers in GRP
- Diespeker Ltd
- Ampteam Ltd
- Buttle's Building Merchants Ltd
- Lamplast Industrial Plastics
- Associated Plastic Components Ltd
- Roplas Ltd
- Harviglass-Fibre Ltd
- B M Plumbing Supplies Ltd
- Data 2 Patterns & Moulds
- UK Hydroslides Ltd (T/A UK Hydrosliders)
- Merrill Brown Ltd
- Gap Group Ltd
- Norco Group Ltd
- Ultra Group
- Tech Spray-Limited
- Brooks Composites Ltd
- MP Plastic Building Supplies
- Roweaver Developments
- Coppa Gutta Ltd

Rubber and plastic products