I think Shillard was being sarcastic, but we are all on the same page: a ban doesn't stop criminals getting what they want.
To clarify on the legal angle here in the UK:
1) The only handguns (firearms) that can be licensed here in England, are black-powder pistols (muzzle-loading pistols). These have not been seen in many gunshot incidents of a criminal nature here in the UK (in fact I have not heard of even one such incident here, but there is/was a criminal element in Australia that tends/tended to favour black-powder pistols).
2) Shotguns can be owned if the individual applies for the appropriate certificate from the police. An individual with a valid shotgun certificate can have as many shotguns as he likes. These can operate by any mechanism (break, pump, semi-auto) as long as the shotgun cannot have more than 3 cartridges 'on board' at a time.
3) No semi-automatic rifles can be had. The only exception to this is rimfire rifles (usually this means .22s). Any centerfire rifle must be manually loading (such as bolt action, lever action, pump action etc). There aren't any calibre limits for manually-operated rifles, but range limitations exist.
4) A muzzle-loading pistol can be had on a firearms certificate, same as the rifles. If the shooter wants to practice the original black powder disciplines, he needs two additional licenses relating to explosives. He needs a license to store explosives and another license to transport those explosives from their place of storage to the range. These days people use Pyrodex instead of black powder because Pyrodex is not an explosive.
5) Crossbows are not licensed. Air rifles and pistols under a certain foot-pound energy value are not licensed, but age limits apply to the purchasing of these items. (I'm not sure what that age is, but it is in the teens).
If you want a firearms certificate, the onus is on you to prove to the police why you need that, whereas if you want a shotgun certificate, the onus is on the police to prove why you shouldn't have it.
And those are the laws in a nutshell. There are exceptions, but the requirements to meet those exceptions are usually beyond the ordinary citizen's needs.