| Business | Phone |
| Group 4 Falck Canada Ltd 383 Richmond St #1102, London N6A 3C4 | (519) 673-3453 |
| Initial Security Svc 219 Oxford St W #203, London N6H 1S5 | (519) 645-8720 |
| Innovative Security Management 148 York St, London N6A 1A9 | (519) 858-4100 |
| Progarde Security Inc 418 St James St, London N5Y 3N8 | (519) 433-6693 |
| Securitas Canada 714 York St, London N5W 2S8 | (519) 432-2655 |
| Stinson Security Svc 566 Oxford St E, London N5Y 3J1 | (519) 673-1664 |
| Commissionaires Western Region 750 Elizabeth St, London N5Y 4T7 | (519) 433-6763 |
| Continental Investigations 5549 Colonel Talbot Rd, London N6P 1H8 | (519) 652-2967 |
| Events Security & Investigatio 206 Central Ave, London N6A 1M7 | (519) 434-8026 |
| Garrison Corporate Sec Specs 148 York St, London N6A 1A9 | (519) 660-8188 |