As someone who works just south of Blackfriars Bridge, I second that. There's nothing that wakes up the place like a healthy helping of spicy wokkadom. And whoever decided a few weeks back to do a few tight orbits directly overhead, followed by a hover in all but name - it even woke up the finance department.
I happened to be demonstrating a rather powerful laser device to a workmate at the time, one dollop of "look at this amazing diffraction effect" to one dollop of "never aim it into your remaining eye". Nothing if not responsible, that's me.
"Go on," he said. "See if it'll hit that helicopter thing".
I made up some nonsense about anti-laser missile systems and imminent death, and he went a bit white. Worth every penny, and he won't be suggesting that again in a hurry.