In 2010, the UK Home Office said:
"The Government has no plans to require owners of mobile phones to be registered with statutory authorities", says the Home Office statement closing the petition, pointing out that the consultation "rejected an option for a single database holding all communications data".
That’s… a little too specific for my liking. “Statutory authorities”…. “single database”…. “all communications data”……
That leaves the door open to, oh I don’t know, making telcos administer the registration of SIMs and the collection of all communications meta-data.
That was Gordon Brown’s Labour government and we now have a Tory one so the point is pretty much moot, but it’s worthwhile to note just how specific that statement was and the most obvious reason for that.