How to appropriately report someone for a potential crime?

Posted by ideally1030@reddit | AskUK | View on Reddit | 26 comments

I won't go into intimate details about how I know the person, but there is a woman claiming to have started making money buying defective/old boats and selling them to international people smugglers, putting lives at risk. I have her name, phone number, general location. Do I just call police and say "this might be happening but I don't have concrete evidence can you look into it?" - would attempting to call out this person on social media risk anything?