Of course had it been Jezza it would have been a right hook and game over.
Or if 80 years old and calling Jacj Straw a liar:
https://www.telegraph.co.uk/news/uknews/1499466/Heckler-82-who-dared-called-Straw-a-liar-is-held-under-terrorist-law.html

A different story for labour?

The fact remains the lunatic made a forced entry, she was clutching a handbag. She posed a threat. The Mansion House Banquet is a collection of high level targets.
. What was in her bag? Hand grenade? Was the pin pulled as she ran towards the top table? That it was a woman sadly now means nothing. Would the Chancellor's Protection Officer have shot her if she had got closer, with the bag? In other, not so different circumstances, the media would have been acclaiming a hero.