| The Counter Spy Shop | 020 7408 0287 | | 62 South Audley Street, London, W1K 2QR |  Map & Directions |
| Newmark Security Plc | 020 7355 0070 | | 57 Grosvenor Street, London, W1K 3JA | | Map & Directions |
| Hobson & Associates Uk & International Research Services Ltd | 020 7927 6843 | | 29 Harley Street, London, W1G 9QR | | Map & Directions |
| Uk People Finder | 0870 765 9588 | | 302 Regent Street, London, W1B 3HH | | Map & Directions |
| Court On Camera | 020 7734 4339 | | 9-12 St. Annes Court, London, W1F 0BB | | Map & Directions |
| Cctv Equipment Co | 0870 765 2818 | | 53 Harrowby Street , London, W1H 5EQ | | Map & Directions |
| K9 Electronics | 020 7563 7000 | | 53 Harrowby Street, London, W1H 5EQ | | Map & Directions |
| Brigade Security Consultants Ltd | 020 7413 9159 | | 2 Lansdowne Row, London, W1J 6HL | | Map & Directions |
| Premier Security | 020 7659 2126 | | 77 Oxford Street, London, W1D 2ES | | Map & Directions |
| Group 4 Total Security Ltd | 020 7629 9736 | | 7 Carlos Place, London, W1K 3AR | | Map & Directions |
| Mea Company (UK) Ltd | 020 8552 1819 | | 122 Shaftesbury, London, W1D 6NG | | Map & Directions |
| Do Something Dangerous Uk | 0870 765 9542 | | Suite 401 Langham House, 302-308 Regent Street, London, W1B 3HH | | Map & Directions |
| Spymaster Communications & Surveillance Systems Ltd | 020 7486 3885 | | 3 Portman Square, London, W1H 6LB | | Map & Directions |
| International Risk Control Ltd | 0870 070 2025 | | 2 Lansdowne Row, berkerly square/, London, W1J 6HL | | Map & Directions |
| Uk Marketing Services | 0870 321 5021 | | Suite 401 Langham House, 302-308 Regent Street, London, W1B 3HH | | Map & Directions |
| Newline Securities Ltd | 020 8211 0606 | | International House, Regent Street , London, W1B 2QD | | Map & Directions |
| Cctv Supply & Sales | 0870 765 0139 | | 53 Harrowby Street, London, W1H 5EQ | | Map & Directions |
| Standwatch Security | 020 8810 0691 | | Sinclair House, 2a The Avenue, London, W13 8NT | | Map & Directions |
| Music & Art Security Ltd | 020 8563 9444 | | 13 Grove Mews, London, W6 7HS | | Map & Directions |
| Knighthood Security Systems Ltd | 020 7235 5386 | | Flat, 132 Talbot Road, London, W11 1JA | | Map & Directions |
| Ubx Scaffold & Site Security Systems Ltd | 020 7229 0999 | | 153 Westbourne Grove, London, W11 2RS | | Map & Directions |
| Tss Security Uk | 020 8563 2442 | | Albion Court, Albion Place, London, W6 0QT | | Map & Directions |
| Barry Bros Security | 020 7262 9009 | | 121-123 Praed Street, Paddington, London, W2 1RL | | Map & Directions |
| Pace Security Services | 020 8434 3656 | | Boundary House, Boston Road, London, W7 2QE | | Map & Directions |
| Instant Aid Protection Ltd | 020 7727 5322 | | 15 Portland Road, London, W11 4LH | | Map & Directions |
| Ambika Security Ltd | 020 7376 9740 | | 139 Kensington High Street, London, W8 6SU | | Map & Directions |
| The Licenced Store Co Ltd | 0800 052 5444 | | Westec House, West Gate, London, W5 1YY | | Map & Directions |
| Teb Ltd | 020 8993 7100 | | Unit 12 Roslin Square, Roslin Road, London, W3 8DH | | Map & Directions |
| Dan House Security | 020 8748 9269 | | Elsinore House, 77 Fulham Palace Road , London, W6 8JA | | Map & Directions |
| Bitz Technology Ltd | 020 8968 0227 | | 344 Kilburn Lane, London, W9 3EF | | Map & Directions |
| Licensed Door Supervisors | 020 8991 3300 | | Westec House, West Gate, London, W5 1YY | | Map & Directions |
| Ambika Security Ltd | 020 7376 9740 | | 16 Princedale Road, London, W11 4NJ | | Map & Directions |
| Sensalarms | 020 8742 2587 | | 10 Barley Mow Passage, Chiswick, London, W4 4PH | | Map & Directions |
| Resolution Security Ltd | 020 7565 4321 | | 4 Challoner Crescent, London, W14 9LE | | Map & Directions |
| Banham Alarms | 020 7627 1414 | | 233-235 Kensington High Street, London, W8 6SF | | Map & Directions |
| Bee Line Security Services | 020 8969 1388 | | 54 Fifth Avenue, London, W10 4DN | | Map & Directions |
| Eyenet Technologies | 020 8799 4404 | | 65 Grosvenor Road, London, W7 1HR | | Map & Directions |
| Advanced Security & Design Consultancy | 020 8962 0660 | | 8 Exmoor Street, London, W10 6BD | | Map & Directions |
| Clarabelle Securities Ltd | 020 7727 9757 | | 15 Holland Park Avenue, London, W11 3RN | | Map & Directions |
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