I need to be vague about which organisation it is. Lets say it's something like the police, I imagine policies and procedures will be very similar.
I have reason to believe that someone who works for this organisation has accessed records about me in order to find things out. This would be historical (from over 20 years ago). The sole purpose is to find out information about me and my family. Things have been thrown out that they couldn't possibly know and given the line of work, I am suspicious they have used their position to look up if there are any records (which there will be). Drips of this information had then been passed on, which I have then been notified about.
I am fairly sure this is illegal? Would there be a way to find out for definite if this person has used their work to check me out?