| Flexi-reel Barrier Systems 01263 577482 | Norwich, Norfolk NR10 5SA 22.3 mi PO Box 335 | Call NowDetails |
| Datadot Technology 01603 407171 | Norwich, Norfolk NR6 6NG 29.3 mi 4 Twickenham Road | Call NowDetails |
| Secure3 Systems 01603 271377 | Norwich, Norfolk NR5 9JR 29.9 mi Baines Way 8 | Call NowDetails |
