Moonlighting investigations

Moonlighting Investigations

Working for Competitors

Sentry Investigations Ltd's corporate investigation services are an effective solution to combat potential moonlighting situations within a business. If an employee is working for a competitor, not only is it likely to be in breach of his or her contract, it can have a hugely damaging effect on a business. It is possible that the competitor is seeking information about your business regarding trade or product secrets. Our Birmingham private investigations are conducted to prove moonlighting through means of covert surveillance and desktop investigations. 

Client Poaching

In some cases, employee's could be poaching clients and investors whilst undercutting your business. An employee who is doing this will know full well he or she is in breach of contract. The practice of moonlighting involves deception and some very careful thinking to remain undetected. There will be high volumes of Email correspondents which can be tricky to monitor for an employer, but not impossible. Moonlighting usually involve meetings in person which the employee will try to do discreetly. Cases like these can be very complex if the moonlighter thinks about his or her every move. That being said, our private investigations have high success rates in proving these cases in favour of the employer. As a result, our investigations have prevented many business's from financial and reputational ruin.

Client poaching investigations

Tell-Tail Behaviours

Moonlighting can be very difficult to spot from the offset. However, we have put together a list of behaviours to look out for, and ways to defend your business from this type of contractual breach. To contact a private investigator Birmingham, email us directly at should you wish to discuss your concerns in more detail.. 


Is your employee taking an unusual amount time off at the moment? This could be for genuine reasons but it could also be to meet with future (your) clients for personal gain. Your employee could also be taking paid time off work to simply work for another business, but generally clients or investors prefer to meet in person to build trust and relations. Look into this, and question employees if the absences are occurring more and more frequently. 

Employee absence

Questions Out of Turn

Is your employee suddenly asking lots of technical product questions out of turn? It may be he or she genuinely wants to know something about a product, but if the questions don’t seem to fit the current environment or conversations, he or she could be collecting product secrets to share with competitors. Question the questions. Ask why your employee wants to know that right now.

questions out of turn

Shared Access

It is advisable to share email account access with teams for purposes of productivity. The main reason for this is to pick up the slack during absences etc, but it may be a powerful form of evidence if your employee is communicating with clients or investors inappropriately. This is not full proof as the employee can quite simply communicate via other email accounts, but it's something to consider. Shared access can also be a way of monitoring what system files are being opened and shared. This is a much stronger form of defence because a business can simply observe when and where confidential documents have been accessed. 

shared access computer systems

Loss of Clients 

Are you suddenly losing clients or employees unexpectedly? If this happens, find out why. It may simply be that they are moving on, but it could be an employee of yours is poaching them for their own business interests. Question your associates to find out why they are moving on from your business.

Working for competitors


This is the very first form of defence. A CV can paint someone very differently to who they actually are. Ensure you check references with a fine-tooth combe. Many businesses fail to follow up on references which could have saved them from some serious problems down the line. A reference could in fact paint a potential employee with their true colours from the offset giving you a much better idea of who you are dealing with. During the stages of interview, really get to know the applicant. Try and get an understanding of past employment, and future plans. Ask detailed questions and don't just listen to the answer, observe how they answer.

effective interviewing


The next form of defence is a carefully written contract and non-disclosure agreement (NDA). This will put things in place from the start, and highlight what you expect as an employer.  Should an employee be in breach of contract at any point, you will already have a prepared legal standing to file proceedings.

Get in Touch 

As mentioned, it can be difficult to spot a potential case of moonlighting, but if you suspect anything is going on, it is advised to call in a private investigator Birmingham. A gut feeling can be the thing that saves your business from ruin. It is your business and you must protect it.


We are Birmingham based private investigators with coverage across the West Midlands. Contact us today for your free, no obligation consultation.