| Panther Security | 01206 764303 | | Unit 10, Peartree Road, Peartree Business Centre, Stanway, Colchester, CO3 0JN |  Map & Directions |
| Inn-House Technology Ltd | 01206 792828 | | Chandlers Row, Colchester, CO1 2HG | | Map & Directions |
| G C S Alarms | 01255 220316 | | Essex House, Stephenson Road, Clacton On Sea, CO15 4XA | | Map & Directions |
| Trailerwatch | 01206 337580 | | PO Box 6688, Stratford St. Mary, Colchester, CO7 6YS | | Map & Directions |
| Protection Security Systems | 01255 221924 | | 5 Farmleigh Avenue, Clacton On Sea, CO15 4QB | | Map & Directions |
| B Brown Security Services Ltd | 01206 738808 | | 11 High Road, Layer-De-La-Haye, Colchester, CO2 0DS | | Map & Directions |
| Aegis Integrated Security Ltd | 01206 230354 | | Walnut Tree, Carringtons Road, Great Bromley, Colchester, CO7 7XA | | Map & Directions |
| Oakpark Security | 01206 793673 | | Assett House, 4 East Street, Colchester, CO1 2TX | | Map & Directions |
| Allsafe Intergrated Security | 01206 844707 | | Unit B4, The Seedbed Centre, Wyncolls Road, Colchester, CO4 9HT | | Map & Directions |
| Personal Safety Factors Ltd | 07796 327883 | | P O Box 9172, West Mersea, Colchester, CO5 8WW | | Map & Directions |
| Abacus Security Systems | 01255 420438 | | 6 Orchard Close, Clacton On Sea, CO16 8DT | | Map & Directions |
| J A C Security | 01787 379233 | | 9 South Suffolk Business Centre, Alexandra Road, Sudbury, CO10 2ZX | | Map & Directions |
| Elm Alarms | 01255 475017 | | 14 St. Vincent Road, Clacton On Sea, CO15 1NA | | Map & Directions |
| Burntyards Ltd | 01787 282912 | | Peacocks Close, Cavendish, Sudbury, CO10 8DA | | Map & Directions |
| C2i International Ltd | 01787 469050 | | Nunnery Street, Castle Hedingham, Halstead, CO9 3DN | | Map & Directions |
| Tower Security Ltd | 01255 676507 | | Scenefelda Farm, Landermere Road, Thorpe-Le-Soken, Clacton On Sea, CO16 0NG | | Map & Directions |
| Homeview Surveillance | 01255 436150 | | 15 Hanwell Close, Clacton On Sea, CO16 7HF | | Map & Directions |
| Abbey Security Services | 01206 855793 | | Unit B11, The Seedbed Centre, Wyncolls Road, Colchester, CO4 9HT | | Map & Directions |
| Initial Electronic Security | 01206 792278 | | 6 Whitehall Road, Commerce Park, Colchester, CO2 8HX | | Map & Directions |
| Frinton Alarm Systems | 01255 861413 | | Dale Hill House, Dale Hill, Kirby-Le-Soken, Frinton On Sea, CO13 0EN | | Map & Directions |
| Britannia Installations Ltd | 01206 822204 | | Kiwran, St. Andrews Close, Alresford, Colchester, CO7 8BL | | Map & Directions |
| Intruder Alert | 01255 674258 | | 14 Sunningdale Way, Kirby Cross, Frinton On Sea, CO13 0TX | | Map & Directions |
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