- Aardvark Business Supplies - Letchworth
- Alsamex Products Ltd - Letchworth
- Altro Floors - Letchworth
- ATG Broadcast Ltd - Letchworth
- Churchills Storage & Refurbishment Ltd - Letchworth
- Constant Power Services - Letchworth
- Drain 365 - Letchworth
- ezCCTV.com Ltd - Letchworth
- Hanwell Solutions Ltd - Letchworth
- Lloyds & Co - Letchworth
- Norton Industrial Fasteners - Letchworth
- Rocket Radio - Letchworth
- Stevenage Sheet Metal Co Ltd - Letchworth
- TonerOne Ltd - Letchworth
- TTM Consultancy Services Ltd - Letchworth
- Xylem Analytics UK Ltd - Letchworth