You may remember a few years ago some bunch, I think a committee of ££-eyed barristers who presumably would not be affected personally in the least, wanted all privately-owned equipment that could be used to make or modify firearms to be registered.
This was after a man was convicted of re-activating firearms and selling them on the criminal market. So basically, like the model-aircraft people, we'd be officially seen as potentially guilty of future criminal activities unless we can prove otherwise, at our expense and inconvenience.
Luckily that particular piece of stupidity was thrown out, but I would not be surprised if they or some other lot of professional ignorami try the same trick at some time after any similar event.
I seem to remember the proposed registration would have been via the Police, as if they don't have enough real work to do. If someone came snooping round my workshop I would be very tempted to point to a machine-tool or accessory, "Right, do you know what this called and what it's for?" and if they don't, ask, "Well, how can you do your job if you don't understand it?"
Only they'd probably charge me with obstruction or something.
A model-engineering friend said he did have a similar un-nerving experience, when a police officer called to see him after he'd reported an attempted break-in. The officer spotted a milling-cutter, though I doubt she knew that's what it was, and made some silly but very accusatory remark about it being "very sharp".
My friend said he told her quite firmly it would not work if it was blunt, and workshops need sharp tools. She didn't press the point.
Strange how they go after those seen as easy targets… I bet they won't demand registering our computers because they are frightened we might defraud the Stock Market or run a county-lines drug network on them.