Many years ago I was cleaning a 3-piece suite in a large mansion type property in the local countryside which was furnished throughout like a Las Vegas hotel, complete with a roulette wheel and gaming machines. It was owned by what I can only describe as 'upwardly mobile Scouse wideboys', who, if they can do nothing else, know how to make money big time.
When I moved the massive sofa to clean it, I found eight plastic packs of brand new £20 notes lying on the floor which must have represented £8k at least. They still had official looking seals and markings on them, and I do confess to feeling quite shaken by this at the time. Anyway, I handed them to the wife of the family, who didn't bat an eyelid or make any comment at all, but threw them onto a nearby table, possibly to get lost again.
Two days later, I caught up with the news of a local Post Office robbery which had taken place the day before I was doing the cleaning, and I tell you I broke into a sweat wondering whether there was any connection. I told a police officer acquaintance of mine about it, but never heard any more or made any further enquiry. I thought I had done as much as I needed to.