If the nazis, communists, fundamental religious nutters etc. got in to govt in the UK and slowly replaced the army chiefs and police with their own sympathizers who could stop them?
Somebody like the deeply religious Tony Blair and his right hand man at the MET and his chief of propaganda at the BBC, sorry chief commissioner. A government elected in by the votes of the deceased? America got a similar leader in Bush, with an equally dubious election process. Neither nation revolted.
1984 has come and gone and we didn't rebel.
The only advantage of the right to bear arms is reinforcement of the belief that those pesky foreigners might instill communism on you. It's rule by fear.
Even in the UK if you want a gun you can just go get one, the fact they are illegal doesnt make much odds. I've been shot at 3 times, just because my assailants didnt have the paperwork to go with their firearm doesnt make it any less likely that they'll hit or miss when shooting at me.
There's less domestic shootings with sensible gun laws, less accidental stuff, and we still accomodate those who shoot for sport, with the exception of those who do it with assault rifles and underslung grenade launchers.
I dont really understand the attachment that Amicans have with guns. Then again, I never felt the need to fire one back when i've been in situations where guns have been involved. I much preffer the "be somewhere else" strategy.