This is how it happens
Someone breaks a copyright law or publishes somehting illegal on a web site or a messageboard.
Someone complains to the owner of the server.
The owner then removes or faces prosecution.
All Roy is doing is removing it before he gets into trouble
Thus the owner of the server doesnt need to know every scrap of info or need extra staff... The cases that did go to court dealt with holding such information after being made aware of it.. Once your aware of it then it aint hard to find..
You sure you have all them GCSEs?