| Sovereign International Ltd | 01704 832800 | | Sovereign House, Church Road, Formby, Liverpool, L37 3NG |  Map & Directions |
| Micromark | 0151 547 7000 | | Unit B1, South Boundary Road, Senator Point, Knowsley Industrial Park, Liverpool, L33 7RS | | Map & Directions |
| Eagle Eye Security Ltd | 0151 486 7001 | | Pegasus House, Speke Hall Avenue, Skypark International, Liverpool Airport, Liverpool, L24 1YH | | Map & Directions |
| Ultimate Security | 0151 707 6944 | | Tower Street, Brunswick Business Park, Liverpool, L3 4BJ | | Map & Directions |
| Saturn Security Installations Ltd | 0151 427 5977 | | 678 Aigburth Road, Liverpool, L19 0NY | | Map & Directions |
| White Security Systems | 0151 286 9688 | | 9 Gleneagles Close, Kirkby, Liverpool, L33 4HA | | Map & Directions |
| Metro Security Services Ltd | 0151 230 0900 | | Po Box 81, Liverpool, L28 1YX | | Map & Directions |
| Nationwide Site Security | 0151 489 9111 | | Knowsley Park, Prescot, L34 4AE | | Map & Directions |
| Intergrated Communication Systems | 0151 920 6623 | | 25 Henley Avenue, Liverpool, L21 2PU | | Map & Directions |
| Mersey Security Ltd | 0151 263 3377 | | 52 Maiden Lane, Liverpool, L13 9AW | | Map & Directions |
| Digital Security Solutions Ltd | 0151 252 0064 | | Bowring Park Road, Rocket Trading Centre, Liverpool, L14 3NZ | | Map & Directions |
| Stanley Security Ltd | 0151 547 1911 | | Woodward Road, Knowsley Industrial Park, Liverpool, L33 7UZ | | Map & Directions |
| Management Facilities Services Ltd | 0151 256 6000 | | 208 Cherry Lane, Liverpool, L4 8SG | | Map & Directions |
| Stanley Steel | 0151 933 6073 | | 1 Birchall Street, Liverpool, L20 8PD | | Map & Directions |
| Integra Security Systems | 0800 298 7265 | | Scotia Road, Liverpool, L13 6QJ | | Map & Directions |
| 1st Alert Steel Security Ltd | 0151 474 9901 | | 178 Queens Drive, Walton, Liverpool, L4 6XD | | Map & Directions |
| V N C Life Line | 0151 298 2321 | | Blenheim Street , Liverpool, L5 8UX | | Map & Directions |
| Visiontec 2000 Ltd | 0151 283 9429 | | 15 Mount Park, Liverpool, L25 6JW | | Map & Directions |
| I Y I Security Services | 0151 283 0666 | | 5 Aldwark Road, Liverpool, L14 0NE | | Map & Directions |
| Kultronic Security Systems Ltd | 0151 531 6429 | | 28 Ennerdale Avenue, Liverpool, L31 9BU | | Map & Directions |
| W Cottrell Ltd | 0151 733 8169 | | 276 Smithdown Road, Liverpool, L15 5AJ | | Map & Directions |
| Noble Integrated Systems | 0151 228 8364 | | 211-213 Eaton Road, West Derby, Liverpool, L12 2AG | | Map & Directions |
| Guardian Electronic Security Ltd | 0151 931 5511 | | Willow House, Mersey View, Liverpool, L22 6QA | | Map & Directions |
| Crime Management Services Ltd | 0151 709 5442 | | 66 Kitchen Street , Liverpool, L1 0AN | | Map & Directions |
| I D Business Ltd | 0800 731 1623 | | 9 The Paddock, Rufford, Ormskirk, L40 1UL | | Map & Directions |
| The Rapid Response Security | 0151 548 5870 | | Telegraph Way, Liverpool, L32 8US | | Map & Directions |
| Vision Technology Ltd | 0151 722 0755 | | 28 Childwall Valley Road, Liverpool, L16 4PE | | Map & Directions |
| Carlisle | 0151 330 6266 | | 9-11 Hermes Road, Gilmoss Industrial Estate, Liverpool, L11 0ED | | Map & Directions |
| M S G | 0151 709 8548 | | Unit C6a, Small Business Centre, Brunswick Way, Brunswick Business Park , Liverpool, L3 4BD | | Map & Directions |
| Delancey Switch Island Ltd | 0151 523 3248 | | Dunnings Bridge Road, Switch Island Leisure Park, Bootle, L30 6TQ | | Map & Directions |
| Skorpion Security Service | 0151 707 0643 | | 12-30 Parliament Street, Liverpool, L8 5RW | | Map & Directions |
| A P S Security | 0151 524 1500 | | 104 Northfield Road, Liverpool, L9 8BA | | Map & Directions |
| Sovereign Monitoring Services Ltd | 0151 727 4446 | | 164a Aigburth Road, Liverpool, L17 7BR | | Map & Directions |
| S W J Electrics | 0151 476 9332 | | 108 Aintree Lane, Liverpool, L10 2JW | | Map & Directions |
| Crosby Intruder Alarms | 0151 920 6912 | | 11 Glenwyllin Road, Waterloo, Liverpool, L22 4RN | | Map & Directions |
| Knowsley Site Services | 0151 548 6121 | | 25 Admin Buildings, Admin Road, Knowsley Industrial Park, Liverpool, L33 7TX | | Map & Directions |
| Knowsley Business Watch | 0151 477 4024 | | Unit 37, 45, Business Resource Centre, Admin Road , Liverpool, L33 7TX | | Map & Directions |
| H J D Security Systems | 0151 523 3794 | | 45 Morval Crescent, Liverpool, L4 5RE | | Map & Directions |
| Lock Up Security | 0151 708 4555 | | 135 Upper Hill Street, Liverpool, L8 8EN | | Map & Directions |
| Adt Fire & Security | 0151 551 4000 | | Adt House, Stephenson Way, Wavertree, Liverpool, L13 1HD | | Map & Directions |
| Rs Security | 07017 402282 | | 61 Allerton Road, Mossley Hill, Liverpool, L18 2DA | | Map & Directions |
| A P B Security Systems | 0151 494 9733 | | 43 Chalfont Road, Liverpool, L18 9UR | | Map & Directions |
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