Nobody wants to go near the house of parliament.
edit: You just posted a link to a website that starts the headline with "Donald Trump claims ..."
The article then has the (at the time) prime minister say he is flat out wrong, the current mayor of london calling him a Nazi, and a scottish MP also condemning him. I'm not saying there aren't parts of london police don't go in, maybe there are, but that article isn't what I'd use to justify the position.
You've misunderstood dude. Sorry, should have been clearer in my post. There's a logical inconsistency in the current situation.