| Relcross Ltd | 01380 729600 | | Prince Maurice Court, Hambleton Avenue, Devizes, SN10 2RT |  Map & Directions |
| T H White Installation Ltd | 01380 726656 | | Unit 3, William Road, Nursteed Road Trading Estate, Devizes, SN10 3EW | | Map & Directions |
| A M L Ltd | 01380 730077 | | Hopton Industrial Estate, Devizes, SN10 2EU | | Map & Directions |
| Crown Security & Fire | 01793 433999 | | 162 Cricklade Road, Swindon, SN2 8AG | | Map & Directions |
| Great Western Security Ltd | 01793 513833 | | Westgate House, Marshgate, Marshgate Trading Estate, Swindon, SN1 2PA | | Map & Directions |
| Total Security Systems | 01249 783361 | | 1 Gibbs Cottages, Gibb Road, Castle Combe, Chippenham, SN14 7NQ | | Map & Directions |
| Golncrest Ltd | 01672 511034 | | 57 Cherry Orchard, Marlborough, SN8 4AS | | Map & Directions |
| Securicode | 01793 870618 | | 16 Stancombe Park, Westlea, Swindon, SN5 7AP | | Map & Directions |
| Magnavision Cctv Ltd | 01793 786100 | | Unit 19-20, Majors Road, Shrivenham Hundred Business Park, Watchfield, Swindon, SN6 8TZ | | Map & Directions |
| Swindon Security Systems | 01793 752820 | | 2 Kitefield, Cricklade, Swindon, SN6 6NF | | Map & Directions |
| Stronghold Security Products | 0870 240 3590 | | Bath Road, Swindon, SN1 4AS | | Map & Directions |
| Sureco Uk Ltd | 01793 852481 | | 3 Parsons Way, Wootton Bassett, Swindon, SN4 8BY | | Map & Directions |
| Tssi | 01793 747700 | | Rutland House, Hargreaves Road, Groundwell Industrial Estate, Swindon, SN25 5AZ | | Map & Directions |
| Eaglecrest Security Ltd | 01793 822494 | | 165 Swindon Road , Stratton St. Margaret, Swindon, SN3 4PW | | Map & Directions |
| Bws Security Systems | 01793 435111 | | Unit 4 A, Greenbridge Road, Oppenheimer Centre, Greenbridge Industrial Estate, Swindon, SN3 3JD | | Map & Directions |
| K9 Security Services | 01249 654342 | | 63 Ladyfield Road , Chippenham, SN14 0AN | | Map & Directions |
| Keyline Security | 01380 828518 | | Trowbridge Road, Seend, Melksham, SN12 6PG | | Map & Directions |
| Compass Security Systems | 01249 720587 | | Homeleaze, Startley, Chippenham, SN15 5HE | | Map & Directions |
| Seeker Technology | 01367 718177 | | 21-23 High Street, Stanford In The Vale, Faringdon, SN7 8LH | | Map & Directions |
| Vision Secure Ltd | 01793 834174 | | 47 Hatherall Close, Stratton St. Margaret, Swindon, SN3 4LQ | | Map & Directions |
| Initial Fire & Security Ltd | 01793 531955 | | 1 Ashworth Road, Orbit Centre, Bridgemead, Swindon, SN5 7YG | | Map & Directions |
| Axxess Identification Ltd | 01793 784002 | | Unit 27-28, Majors Road, Watchfield, Swindon, SN6 8TZ | | Map & Directions |
| Camera Security Services | 0870 224 4000 | | Methuen Park, Chippenham, SN14 0GX | | Map & Directions |
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