| Business | Phone |
| Hughes Watts Intelligence Inc 2910 South Sheridan Way, Oakville L6J 7L9 | (905) 829-4078 |
| Investigative Services Inc 247 North Service Rd W, Oakville L6M 3E6 | (905) 338-7890 |
| R T Brockbank & Assoc 220 Wyecroft Rd #203, Oakville L6K 3V1 | (905) 844-0028 |
| Cobbett Basse Intelligence Inc 247 North Service Rd W, Oakville L6M 3E6 | (905) 633-9174 |