| 1st Trend Alarms Ltd | 01446 713331 | | Walnut Tree Cottage, Penmark, Barry, CF62 3BR |  Map & Directions |
| First On Sight Securities | 01443 224750 | | Unit 1/4, Coedcae Lane, Woodlands Workshops, Pontyclun, CF72 9DW | | Map & Directions |
| Recall Security Ltd | 01685 875597 | | 37 Victoria Square, Aberdare, CF44 7LB | | Map & Directions |
| Celtic Alarms | 029 2086 3838 | | 16 Garth Close, Rudry, Caerphilly, CF83 3EN | | Map & Directions |
| Security Centres Ltd | 029 2039 5673 | | 5 Park Street, Cardiff, CF10 1NT | | Map & Directions |
| Gardiner Security Ltd | 029 2076 2418 | | Unit 3, Malvern Drive, Llanishen, Cardiff, CF14 5DR | | Map & Directions |
| Quelsec Corporation Ltd | 01443 405448 | | Birchwood, Llandraw Woods, Pontypridd, CF37 1EX | | Map & Directions |
| I M S Security | 029 2056 0496 | | Fairwater Grove East , Cardiff, CF5 2JU | | Map & Directions |
| A-Force Security Services Ltd | 029 2031 2678 | | 19 Loudoun Square, Cardiff, CF10 5JA | | Map & Directions |
| P D C Digital Solutions Ltd | 01446 722503 | | Palmerston House, Palmerston Road, Barry, CF63 2YZ | | Map & Directions |
| Visual Information Systems | 029 2025 2020 | | Unit 8 Canal Business Park, Dumballs Road, Cardiff, CF10 5FE | | Map & Directions |
| Laser Fire & Security | 01443 492999 | | 45 Elm Street, Pontypridd, CF37 5DG | | Map & Directions |
| Reliance Security Services Ltd | 029 2036 9932 | | Castleton Court Fortran Road, St. Mellons, Cardiff, CF3 0LT | | Map & Directions |
| Concept C C TV | 029 2077 9777 | | Unit 8, Canal Industrial Park, Dunbells Road, Cardiff, CF10 5SE | | Map & Directions |
| Initial Concept Solutions | 029 2070 4488 | | Hillcrest, Andrew Road, Penarth, CF64 2NS | | Map & Directions |
| I D S Security Systems | 029 2077 5767 | | Heol Y Rhosog, Cardiff, CF3 2EW | | Map & Directions |
| R M B | 029 2088 3177 | | Caerphilly Business Park, Caerphilly, CF83 3ED | | Map & Directions |
| Beamax Services Ltd | 029 2049 8300 | | 163 Glenroy Street, Cardiff, CF24 3LA | | Map & Directions |
| Safe & Sound | 01685 359839 | | 1 Sweet Water Park, Trefechan, Merthyr Tydfil, CF48 2LF | | Map & Directions |
| Vida Solutions | 01443 819519 | | Tredomen Business & Technology Centre, Tredomen Industrial Park, Ystrad Mynach, Hengoed, CF82 7FN | | Map & Directions |
| Adt Fire & Security | 029 2042 2700 | | A D T House, Cardiff Gate Business Park, Copse Walk, Cardiff, CF23 8RB | | Map & Directions |
| First Class Security Ltd | 029 2048 8466 | | 7-9 Carlisle Street , Cardiff, CF24 2AY | | Map & Directions |
| The Corps Of Commissionaires | 029 2089 2424 | | Henstaff Court Business Centre, Groesfaen, Pontyclun, CF72 8NG | | Map & Directions |
| Senator Ltd | 01656 651855 | | Morian House Bridgend Business Centre, Bennett Street, Bridgend Industrial Estate, Bridgend, CF31 3SH | | Map & Directions |
| Dycon Security | 01443 471060 | | Unit D, Cwm Cynon Business Park, Mountain Ash, CF45 4ER | | Map & Directions |
| Adc Communication Systems | 01656 785257 | | 132 West Park Drive, Porthcawl, CF36 3RN | | Map & Directions |
| Concept Cctv Ltd | 07813 873477 | | 92 Millfield Drive, Cowbridge, CF71 7BR | | Map & Directions |
| Castell Security Systems | 029 2081 0082 | | Unit C21 Garth Works, Taffs Well, Cardiff, CF15 7RN | | Map & Directions |
| S A S Security Services Ltd | 029 2049 1444 | | Cardiff Bay Business Centre, Titan Road , Cardiff, CF24 5EJ | | Map & Directions |
| Concept Cctv | 029 2048 3148 | | Unit 8, Dumballs Road , Cardiff, CF10 5FE | | Map & Directions |
| Western Security Systems Ltd | 029 2081 5040 | | South Glade, Gwaelod-Y-Garth, Cardiff, CF15 9TS | | Map & Directions |
| Diamond Alarm Systems | 029 2045 1789 | | 106 Crwys Road, Cardiff, CF24 4NQ | | Map & Directions |
| Frf Alarms Ltd | 029 2075 5799 | | 136 Mackintosh Place , Cardiff, CF24 4RS | | Map & Directions |
| Case Security | 029 2038 7006 | | Unit 5, Tresillian Terrace, Cardiff, CF10 5DE | | Map & Directions |
| Patriot Security Services | 029 2045 2155 | | Unit 8, Dumballs Road, Cardiff, CF10 5FE | | Map & Directions |
| Sonic Alarm System | 029 2070 3720 | | 14 St. Peters Road , Penarth, CF64 3PP | | Map & Directions |
| Close Pro International Ltd | 029 2023 4555 | | World Trade Centre, Cardiff International Arena, Mary Ann Street, Cardiff, CF10 2EQ | | Map & Directions |
| Pentagon Alarms | 07767 202397 | | 27 The Gables, Dinas Powys, CF64 4DN | | Map & Directions |
| B Secure Security Services | 029 2077 7559 | | Connies House, Rhymney River Bridge Road, Cardiff, CF23 9AF | | Map & Directions |
| Exodus Security Services Ltd | 029 2022 2011 | | 2 Cathedral Road, Cardiff, CF11 9RZ | | Map & Directions |
| Chubb | 029 2075 9888 | | Unit 2/3 Cleeve House, Lambourne Crescent, Llanishen, Cardiff, CF14 5GP | | Map & Directions |
| J P L Design Engineering | 029 2063 1099 | | Unit 6, Portmanmoor Road, Splott Industrial Estate, Cardiff, CF24 5FF | | Map & Directions |
| Digital Video Solutions | 029 2045 5512 | | Unit K6 South Point, Foreshore Road, Cardiff, CF10 4SP | | Map & Directions |
| Dragon Fire & Security Ltd | 029 2048 5555 | | Dragon House, Norwich Road, Cardiff, CF23 9AB | | Map & Directions |
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