You would never prove that a properly planned and executed police intervention increased risk to life and limb, certainly not on the basis that you appear to be suggesting, namely that they would be resisted by those intent on continuing to break the law and offering unlawful physical resistance to a lawful police intervention.I wonder though, does that not (at least logically) cut both ways? If as in this case the planned police intervention is, by any reasonable assessment, likely to increase the risk to life and limb ...
Unlawful action, improperly planned action, disproportionate action, yes., any or all of those could sustain such an argument ... but that is not what is being discussed.


He had a famous zero tolerance approach when in Brixton (e.g. arresting a cannabis dealer himself
).

