Martin Control Panels Ltd
- Manufacturer of steel enclosures for industrial systems. Also supply busbar systems and instrumentation. Product details, company news, design specifications and contact information. [Based in Thundridge]
- http://www.maxwright.net/

Watford Timber Company Ltd
- Timber merchants. Describes the company, its product range and its machining capabilities.
- http://www.watfordtimber.co.uk

Taylor Jackson Health Products
- A company dedicated to the advancement of therapeutic natural skin care - safe, natural ingredients used to help tackle common skin problems. Located in Shenley.
- http://www.taylor-jackson.com/

Calphotonics UK
- Designers and developers of optical systems, based in new Barnet.
- http://www.calphotonics.com/