| Active Alarms | 01752 774424 | | 42 Aylesbury Crescent, Plymouth, PL5 4HX |  Map & Directions |
| A & M Security | 01752 337337 | | 6 Woodford Avenue , Plympton, Plymouth, PL7 4QN | | Map & Directions |
| Paul J Back | 01752 228163 | | 23 Commercial Road, Cox Side, Plymouth, PL4 0LE | | Map & Directions |
| Pji Securities | 01726 890318 | | Hunters Moon Higher Harros Farm, Roche, St. Austell, PL26 8LN | | Map & Directions |
| A A Argon Electrical | 01752 863295 | | Sheerwater, Beach Road , Heybrook Bay, Plymouth, PL9 0BS | | Map & Directions |
| Home & Business Security Systems | 01752 606500 | | 23 Clevedon Park Avenue, Plymouth, PL2 3HB | | Map & Directions |
| Genric Ltd | 01752 707469 | | 65 Windermere Crescent, Plymouth, PL6 5HX | | Map & Directions |
| Samson Direct Security | 01752 558227 | | 115 Wilton Street, Plymouth, PL1 5LT | | Map & Directions |
| Regional Security Systems | 01566 775050 | | 11 St. Thomas Road, Launceston, PL15 8BU | | Map & Directions |
| Abel Alarm Co Ltd | 01752 660236 | | 208 Exeter Street, Plymouth, PL4 0NH | | Map & Directions |
| E A S Protection | 01752 337271 | | Unit 1 Riverside Business Park, Colebrook Road, Plympton, Plymouth, PL7 4AA | | Map & Directions |
| Outersight Ltd | 0870 777 5772 | | Unit 21 City Business Park, Somerset Place, Plymouth, PL3 4BB | | Map & Directions |
| Stout Security | 01726 844699 | | Homeleigh, St. Ewe, St. Austell, PL26 6EY | | Map & Directions |
| Securi-Guard Ltd | 01752 204900 | | Darklake View, Estover, Plymouth, PL6 7TL | | Map & Directions |
| Mayday Alarms Ltd | 01752 484005 | | Mayday House, 23 Roseveare Close, Plymouth, PL9 8JJ | | Map & Directions |
| Westcountry Security | 01752 492949 | | 15 Billacombe Road, Pomphlett, Plymouth, PL9 7HN | | Map & Directions |
| Adt Fire & Security | 01752 692300 | | 15 Estover Close, Plymouth, PL6 7PL | | Map & Directions |
| Essa Technology | 01752 848094 | | 8 Castle Buildings, Gilston Road, Saltash, PL12 6TW | | Map & Directions |
| Security Management South West Ltd | 01752 227731 | | Unit 31 Union Street, Plymouth, PL1 3HQ | | Map & Directions |
| Essa Security Group | 01752 848094 | | Castle Buildings, Gilston Road, Saltash, PL12 6TW | | Map & Directions |
| Dartline Security Systems Ltd | 01752 766539 | | 206 Dunraven Drive, Plymouth, PL6 6AZ | | Map & Directions |
| Apex Electrical & Security Systems Ltd | 01752 345061 | | 115 Larkham Lane, Plymouth, PL7 4PW | | Map & Directions |
| Kestrel Guards | 023 8086 5658 | | 70 Hill Park Crescent, Plymouth, PL4 8JW | | Map & Directions |
| Btb Alarms | 01752 700929 | | Unit 3 Strode Business Centre, Huxley Close , Plympton, Plymouth, PL7 4JN | | Map & Directions |
| Universal Security Ltd | 01752 511222 | | Unit 120 City Business Park, Somerset Place, Plymouth, PL3 4BB | | Map & Directions |
| Spinnaker International Ltd | 01752 850300 | | Saltash Industrial Estate, Saltash, PL12 6LF | | Map & Directions |
| Fortress Alarms & Installations | 01752 405319 | | 36 Woodway, Plymouth, PL9 8TS | | Map & Directions |
| Fluiditi | 01752 242300 | | Unit 86/88, Tamerton Foliot Road, Christian Mill Business Park, Plymouth, PL6 5DS | | Map & Directions |
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