To be fair that is the scenario Himmy is describing. most of it is covered by Criminal Damage Act 1971 Sec 5,2 (b),common law of self defence, s3 Criminal Law Act 1967, which we've done to death.
Unfortunately it is Sec 5,3 Criminal Damage act that is frequently used to get off convictions. This is why the CPS try anything other than standard criminal damage.