Buyer beware!!!!
If looking for the services of a covert investigation company ,please due your due diligence. Check training, operational capability, legal compliance, professional body affiliation and insurances.
AVOID anyone who says their surveillance course was 5 or 8 days long. We term this the zero to hero course provided by weak training providers.
AVOID anyone who says I did some training whilst on a close protection course. This training is awareness only.
AVOID anyone from military or policing backgrounds who cannot prove they have undertaken covert courses.
Finally - a decent service provider will charge a decent fee ( usually payable in advance). Cheap is bad and you generally get poor service, poor reporting and will end up 'buying cheap, buying twice'
Happy to help.