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Investigation Solution Services
- Video
- Matter
“The party of people that I needed PI work done on did not even have a clue that they were being followed, videoed and pictures being taken of them for multiple days.”
Best Private Investigators in London, ON
14 agencies listed · 6 in London · 4 open 24/7 · 6 open weekends · 11 rated 4.5+
Data verified October 16, 2026
We are still growing
There are too few quality options within 12.5 miles radius, so we have expanded area of coverage to up to 200 miles from you. This includes London and several other cities.
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S42 Investigations
“They stay on top of things,,,and are really great at getting back to you”
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Cortese & Associates Private Investigator
“Thanks for your help, Scott!”
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Corporate Investigation Services
- Company
“I have done a couple of labour disputes for the company, and I would suggest for anyone who is a licensed private investigator looking for work to apply with them.”
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Rivard Investigations
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Beaconbridge Workplace Solutions
The 14 agencies shown for London, ON carry out investigation work: surveillance, tracing, background and asset inquiries. Details of licence, specialties and coverage come from each agency's own website, and ratings and quotes come from public reviews.
Area overview: London, ON
6 of the 14 agencies we list are based in London; the other 8 serve London from towns including Brantford (84 km), Cambridge (89 km) and St. Marys (33 km). 12 of the agencies on this page have a rating, from 3.9 to 5.0 across 272 reviews; 1 has 50 or more reviews and 11 are rated 4.5 or higher. 4 are open around the clock and 6 are open on weekends. 2 show a licence on their websites. 7 have ten or more years of experience, the longest 29 years. 4 offer urgent consultations and 1 is family- or locally-owned. We have a website on file for all 14 of the agencies on this page; all 14 publish a contact page; 12 list a public email and 1 takes bookings online. We count these figures across the agencies on this page; distances are straight-line, and hours and prices change, so confirm the details with the agency before you book.
Which investigators listed for London describe their work online?
All 14 agencies here have a website recorded. That is where a firm sets out its provincial licence, the inquiries it handles, and whether its clients are mostly law firms, insurers or private individuals. The client mix tells you a good deal about how carefully its reports are prepared.
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Canadian Security Management
“They are helpful and respectful people and I would highly recommend their service.”
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Gotcha Process Serving Services
- Documents
- Efficient
“She had the documents served within 2 hours of them being sent to her and the Affidavits of Service and Invoice to me the next day, all within less than 24 hours.”
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Matric Security
- Skills
- Employee
- Technology
“I would heartily suggest these people to anyone in need of excellent security; they are fantastic, extremely professional, and I always felt safe working with them.”
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Survail Protection and Investigative Services
- Company
- Team
“This company is very professional and very considerate of their employees, not only that but they also have multiple locations aside from Brantford that are available for employees who can travel.”
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Rainy Day Private Investigative Services
“Samuel from Rainy Day gave us endless free consultations and walked us through his action plan for our case, explaining why he was doing the things he was and taking the time to elaborate to someone not familiar with "the industry".”
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Protection Security Investigations
- Tent
- Team
- Company
“Protection Security Investigations takes security seriously.”
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Blackbridge Private Investigator
“After calling many PI companies to find someone to work on my case I ended up working with Blackbridge I was genuinely happy to work with the owner as he discussed information and options other companies did not for my case.”
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Benard + Associates
“I know i speak for my team by saying that we are much more skilled at Workplace Investigations now that we have successfully completed all 3 of your workshops.”
Private Detective Services in London, ON Cost Estimates
Minimum cost
$374
Maximum cost
$11840
National Average
$1496
Avg Per Hour Rates
$156
$873
$2493
Average price range is based on 495 cost profiles
Why these companies made our list
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