| Active Securities | 07970 760915 | | Edale Road, Mastin Moor, Chesterfield, S43 3BB |  Map & Directions |
| Security Camera Systems Ltd | 01246 297567 | | 18 Upland Rise, Chesterfield, S40 2DD | | Map & Directions |
| C & H Alarm Systems | 0114 287 3664 | | 19 Robin Place, Aston, Sheffield, S26 2GG | | Map & Directions |
| Allsafe Security | 01909 569402 | | 7 Grasmere Close, Anston, Sheffield, S25 4GF | | Map & Directions |
| Pro-Guard Security Yorkshire Ltd | 0114 239 3060 | | 290 Hurlfield Road, Sheffield, S12 2SL | | Map & Directions |
| Mayson Security Services Ltd | 0114 258 3791 | | 64-82 Broadfield Road, Sheffield, S8 0XL | | Map & Directions |
| Alite Services | 0114 279 8485 | | Unit 20b Prospect House, City Road, Sheffield, S2 5HH | | Map & Directions |
| Ble Ltd | 01246 436361 | | Manor House, Church Street, Eckington, Sheffield, S21 4BH | | Map & Directions |
| Technology Solutions | 0114 275 2383 | | Spartan Works, 20 Carlisle Street, Sheffield, S4 7LJ | | Map & Directions |
| Special Events Security Ltd | 0114 279 8888 | | Provincial House, Solly Street, Sheffield, S1 4BB | | Map & Directions |
| A-Lectrician | 01226 724469 | | 52 High Street, Royston, Barnsley, S71 4RF | | Map & Directions |
| A & A Services | 0114 287 2787 | | 22 Laycock Avenue, Aston, Sheffield, S26 2FU | | Map & Directions |
| Geoff Arnold Audio Visual Services | 01709 526029 | | 20 Arthur Street, Rawmarsh, Rotherham, S62 5ND | | Map & Directions |
| Home Security Systems | 01709 874234 | | 67 Rig Drive, Swinton, Mexborough, S64 8UL | | Map & Directions |
| P A Protection Services | 0114 281 4848 | | Unit 2, 111 Halifax Road, Sheffield, S6 1LB | | Map & Directions |
| White Rose Security Ltd | 01709 588773 | | 136a Doncaster Road, Mexborough, S64 0JW | | Map & Directions |
| Tri Ex Security | 01909 550822 | | Unit 1 North Anston Business Centre, Houghton Road, North Anston Trading Estate, North Anston, Sheffield, S25 4JJ | | Map & Directions |
| Temple Security Ltd | 01709 874600 | | Unit 1, Farfield Park, Manvers, Rotherham, S63 5DB | | Map & Directions |
| M C A Technics | 0114 288 1332 | | 15 St. Mary Crescent, Deepcar, Sheffield, S36 2TL | | Map & Directions |
| Smiths Security Services | 07980 068461 | | 13 Danby Avenue, Old Whittington, Chesterfield, S41 9NH | | Map & Directions |
| Abacus Security Systems | 01246 813800 | | 1 Bowdon Avenue, Barlborough, Chesterfield, S43 4JE | | Map & Directions |
| Abs Security Services Ltd | 01709 373424 | | Po Box 638, Rotherham, S60 9BQ | | Map & Directions |
| Elite Contract Security Ltd | 01709 382120 | | Elite House, 83-85 Badsley Moor Lane, Rotherham, S65 2PH | | Map & Directions |
| Orbital Communications | 01226 388157 | | 11 Fountain Parade, Mapplewell, Barnsley, S75 6FW | | Map & Directions |
| Mod Alarms | 0845 260 7286 | | 221 Chippinghouse Road, Sheffield, S7 1DQ | | Map & Directions |
| Porter Security Services Ltd | 0114 285 2952 | | 2 Baxter Road, Sheffield, S6 1JF | | Map & Directions |
| Micro Alarms Ltd | 0114 240 1151 | | Thorncliffe Mews, Newton Chambers Road, Thorncliffe Park Estate, Chapeltown, Sheffield, S35 2PH | | Map & Directions |
| Ace Marketing Utilities | 01909 772224 | | 41 Broad Bridge Close, Kiveton Park, Sheffield, S26 6SL | | Map & Directions |
| Vault Vision Security | 01623 812722 | | Systems House, The Hill, Glapwell, Chesterfield, S44 5NB | | Map & Directions |
| Vigil Security Systems | 0114 267 8881 | | 158 Crookes, Sheffield, S10 1UH | | Map & Directions |
| Excel | 01909 733066 | | 49-51 High Road, Carlton In Lindrick, Worksop, S81 9DY | | Map & Directions |
| Wilkin Alarms Ltd | 0114 267 0011 | | 466-468 Ecclesall Road, Sheffield, S11 8PX | | Map & Directions |
| 4 Square Security Services | 01226 742531 | | Wath Road, Elsecar, Barnsley, S74 8HJ | | Map & Directions |
| G-Teck Electrical | 0114 287 4002 | | 27 Eden Grove, Swallownest, Sheffield, S26 4TP | | Map & Directions |
| De Taunton | 01226 770802 | | Unit 8, Mount Osborne Business Centre, Mount Osborne Industrial Park , Oa, Barnsley, S71 1HH | | Map & Directions |
| A M Security Fabrications | 01246 827009 | | Unit 5a, M1 Markham Lane, Commerce Park, Duckmanton, Chesterfield, S44 5HS | | Map & Directions |
| M B Alarms & Electrical | 01226 207320 | | 17 Falmouth Close, Barnsley, S71 2QQ | | Map & Directions |
| A D S Security Ltd | 01909 474183 | | 28 Overend Road , Worksop, S80 1QF | | Map & Directions |
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