Security Systems in Cambridge, Cambridgeshire
| Name & Address | Phone # | Website |
| Active RF Ltd Downing Park, Cambridge, Cambridgeshire CB5 0NB | 01223 813637 |  |
| Clear Image Unit 2a/Industrial Estate, Cambridge, Cambridgeshire CB2 4EE | 01223 833883 | |
| D J Grindley Electrical Services 14 North Street, Cambridge, Cambridgeshire CB5 0BA | 01638 604605 |  |
| Initial Electronics Security Ltd Unit 13/Barnwell Business Park, Cambridge, Cambridgeshire CB5 8UY | 01223 214677 | |
