I'm a member of both FPV UK and DroneSafe Register. We have a grace period until January 2020 as FPV UK members are exempt from the registration deadline until then. Between now and then, FPV UK will contact its members and request the fee then pay it upon your behalf. As a responsible drone pilot I have no real problem with this. I think regulation is a good thing although......those who will fly irresponsibly or those who will use UAV's for criminal activity will not give a hoot about this at all. So that's a bit of a beef.
And as far as policing this is concerned, it's going to be a simply huge task. However, and I can't say to much on a public forum but.....in my current job/specialist role I work alongside a number of partnership agencies and police units. In my neck of the woods. Believe me, UAV usage will and is being policed. I've spoken to our dedicated Police CAA liaison officer and his department receive hundreds of alerts and complaints per week which are prioritised and followed up. All of them. Maybe not immediately but all are subject to scrutiny and appropriate follow up action is exercised. The police are well aware of the potential negative issues of drone usage, and are most interested in criminal activity and the CT threat that a weaponized drone could pose. Yes, even here in the UK.
I've been flying UAV's for years and the last technical input delivery we had from the officer I mentioned above opened my eyes to just how aware and proactive the authorities in the UK are to UAV's being used criminally. In fact, during the technical input he delivered his service mobile phone went off a number of times with reports coming in of irresponsible or illegal flying activities. However folks, what they are most interested in is exactly this - the criminal element and above all the CT element. Irresponsible pilots will also pop up on their radar but will get prioritised accordingly for action if that makes sense?