Unbelieveably we could own semi auto Brens in the UKtoo until fairly recently. I'll have to get my tissues out as I'm apt to burst into tears............. You could own a live .303" Bren that had been converted to single shot fire but better still, you could own a Bren, totally free of ALL accountable and traceable paperwork too. Provided that the barrel was bored out so as to JUST remove any trace of the riflinbg, it was deemed to be a shotgun.
Some say that you had one of each and when the .......................... anyway, that was before about 1990- or so