IF you live in the UK, the law is quite clear:
1: If an intruder is physically threatening you or yours, you may respond in kind. That doesn't mean that you blast him with your 12 bore if he puts his fists up for a punch up.
2: If an intruder's legging it away, you can't shoot him in the back, as Tony Martin did.
3: If an intruder points a gun at you, or swings a baseball bat at you, then you would be justified in shooting him.
4: So far on here, IF these posters are here in the UK, at least half a dozen of you would get nicked.
5: NO Judge in the UK would utter the words that it was fine to shoot someone as long as your firearm was held legally.That is so much rubbish.