Hi Cinders, the last time compensation was paid here, was when (most) Handguns were moved to Sec5.
They did pay full current market value and it cost the Government of the day a lot of money.
One of the reasons attacking .50cal and lever/trigger release owners is attractive to the politicians, is the comparatively small number of owners, so minimum copo bill, with maximum political grandstanding benefits.
There has been renewed interest in Englandwith registering and controlling air rifles, as Scotland has done.
The Police are horrified at the prospect, as they are stretched to the limit just trying to keep pace with current Firearms/shotgun certification.
Its all depressingly familiar to us UK shooters...