| Flexi-reel Barrier Systems 01263 577482 | Norwich, Norfolk NR10 5SA 13.8 mi PO Box 335 | Call NowDetails |
| Dragon Security Systems 01603 783958 | Norwich, Norfolk NR12 8UG 25.7 mi Wroxham | Call NowDetails |
| Datadot Technology 01603 407171 | Norwich, Norfolk NR6 6NG 29.9 mi 4 Twickenham Road | Call NowDetails |
