London's Met Issued With Tasers

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Just read the spin.

From Monday, the Metropolitan Police will issue Taser stun guns to previously unarmed officers, becoming the tenth force to join the Home Office pilot. To demonstrate the benefits, the Met opened its training centre to the media last week.

How do you stop a man with adrenaline surging through his veins and a knife in his hand?

If you've already bent his wrist to breaking point, hit him with an iron bar and piled every man you've got on top of him, what is left?

That's the dilemma the police face every day and that's why they say they need Taser stun guns.more

Then read the reality, OK I grant you these are mainly US examples, plod would never abuse taser use I'm sure.