| Business | Phone |
| Group 4 Falck Canada 720 Belfast Rd #201, Ottawa K1G 0Z5 | (613) 244-0732 |
| Harris Security Agency 168 Charlotte St, Ottawa K1N 8K6 | (613) 562-0955 |
| Initial Security Svc 1142 Av Carling, Ottawa K1Z 7K5 | (613) 563-0685 |
| North America Security Svc 43 Eccles St, Ottawa K1R 6S3 | (613) 567-5677 |
| Riviera Security Svc Inc 380 Av Terminal, Ottawa K1G 0Z3 | (613) 244-0623 |
| Securworks Protection Svc 205 Bell St N, Ottawa K1R 7E1 | (613) 224-3373 |
| Cambrian Alliance Protection 1142 Carling Ave #200, Ottawa K1Z 7K5 | (613) 225-9495 |
| Carleton Parking Management 2660 Southvale Cres #217, Ottawa K1B 4W5 | (613) 720-5021 |
| Commissionaires Division 108 Lisgar St, Ottawa K2P 0C2 | (613) 231-6462 |
| Ensign Security Svc 720 Belfast Rd #201, Ottawa K1G 0Z5 | (613) 244-0743 |
| Garda Of Canada 260 St Patrick St, Ottawa K1N 5K5 | (613) 562-9172 |