A week in London? Wow, I'd rather be repeatedly punched in the face by a spastic clown.
Sound like the act of one of the 'street entertainers' you'd find in Covent Garden.
I actually visited London at the weekend. Not too bad for a few days visit but as always I felt bloody glad I don't live there.
I recommend spending maybe two or three days there epic as you'll be able to see most of the sights in that time but then, by all means, visit somewhere else in the country.