I suspect this is a good example of how the law is and not how we would like it to be !
More to the point the judicary have guidelines that must be adhered too. An Englishman defending his castle ( no offence to scots et al but a saying) seems to hold little sway.
Hopefully the Tony Martin case will be used as precedent ,common sense may prevail but dont hold your breath
Legally extremely complicated and be a lot of facts we are not privvy too