| Advantage 1 | 01452 621721 | | Po Box 4013, Upton St. Leonards, Gloucester, GL4 8WA |  Map & Directions |
| Orion Security Solutions Ltd | 01452 730060 | | Unit D4, Innsworth Technology Park, Innsworth Lane Insworth, Gloucester, GL3 1DL | | Map & Directions |
| Sirens Alarms Ltd | 01453 753723 | | Suite 3 2nd Floor, Lightpill House, Stroud, GL5 3QF | | Map & Directions |
| Allen-Vanguard | 01684 851100 | | Allen House Ashchurch Business Centre, Alexandra Way, Ashchurch, Tewkesbury, GL20 8TD | | Map & Directions |
| Britannic Guard | 01452 854499 | | Guard House, Down Hatherley Lane , Down Hatherley, Gloucester, GL2 9QB | | Map & Directions |
| Visual Intergrated Systems Ltd | 0870 240 6727 | | The Coach, Eastwood Park , Falfield, Wotton Under Edge, GL12 8DA | | Map & Directions |
| Fasit Security | 01242 870414 | | 1 Stockwell Cottages, Stockwell, Birdlip, Gloucester, GL4 8JZ | | Map & Directions |
| Olympus Security | 01242 255383 | | 34 Duke Street, Cheltenham, GL52 6BP | | Map & Directions |
| Shield Security Services | 01242 582667 | | Unit 6 Mead Road, Mead Park Estate, Cheltenham, GL53 7EA | | Map & Directions |
| Phoenix Security | 01386 841731 | | Grafton Mews, High Street, Chipping Campden, GL55 6BW | | Map & Directions |
| Cotswald Business Village Security | 01608 651180 | | 1 Dulverton Place, Moreton In Marsh, GL56 0HF | | Map & Directions |
| Sky Guardian | 01452 621777 | | 20 Winchcombe Street, Cheltenham, GL52 2LY | | Map & Directions |
| Eclipse Security Ltd | 01452 730480 | | Unit D4, Innsworth Lane, Innsworth Technology Park, Gloucester, GL3 1DL | | Map & Directions |
| Bulldog Protection Systems | 01452 854175 | | Little Elms, The Reddings, Cheltenham, GL51 6RY | | Map & Directions |
| J S Security Ltd | 01242 573327 | | 93 St. Georges Place, Cheltenham, GL50 3QB | | Map & Directions |
| Glevum Security Ltd | 0845 450 0031 | | Unit 8, The Steadings Business Centre, Maisemore, Gloucester, GL2 8EY | | Map & Directions |
| Richard Minett | 01242 675270 | | 16 Denham Close, Woodmancote, Cheltenham, GL52 9TX | | Map & Directions |
| Falcon Systems Ltd | 01452 309835 | | Waterman House, Walham, Sandhurst, Gloucester, GL2 9ND | | Map & Directions |
| Pro Guard Security Solutions | 0845 200 4911 | | Fort Cottage, Rodborough Common, Stroud, GL5 5BJ | | Map & Directions |
| Keysecure Ltd | 01453 890066 | | Unit F4, Draycott Business Park, Cam, Dursley, GL11 5DQ | | Map & Directions |
| Turnstile Systems Ltd | 01453 883590 | | Unit F4, London Road, Phoenix Trading Estate, Thrupp, Stroud, GL5 2BX | | Map & Directions |
| P & L Security Ltd | 01452 303996 | | 11 Robinson Road, Gloucester, GL1 5DL | | Map & Directions |
| Ssg Fire Security | 01452 380256 | | 90 Bristol Road, Gloucester, GL1 5SQ | | Map & Directions |
| Maximesh | 01452 561156 | | Bristol Road, Morelands Trading Estate, Gloucester, GL1 5RZ | | Map & Directions |
| Excel Security Ltd | 01452 547600 | | Po Box 1004, Gloucester, GL4 6YU | | Map & Directions |
| Cirencester Intruder Alarms | 01285 651025 | | 31a Castle Street, Cirencester, GL7 1QD | | Map & Directions |
| Group 4 Technology Ltd | 01684 299400 | | International Drive, Tewkesbury Business Park, Tewkesbury, GL20 8UQ | | Map & Directions |
| Home Alarms Ltd | 01452 523141 | | North Wing Agricultural House, Sandhurst Road, Greville Close, Gloucester, GL2 9RG | | Map & Directions |
| Micro-Vision Fire & Security Ltd | 01452 556575 | | Brunel Court, Waterwells Business Park, Quedgeley, Gloucester, GL2 2AL | | Map & Directions |
| Security 1 | 01452 525798 | | 8 Bodiam Avenue, Tuffley, Gloucester, GL4 0TJ | | Map & Directions |
| F M Electronics Ltd | 01594 827070 | | 18-20 Forest Vale Road, Forest Vale Industrial Estate, Cinderford, GL14 2PH | | Map & Directions |
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