ShyT, I was mainly referring to my experiences with NYC Heliports ($275 during peak times), not quite Battersea rates but still a lot less for a town car to the airport!
My point was not to commute into Battersea every day, I just meant as part of the experience, and yes, paying GBP550 for landing fee's will be some experience! - Probably a bad one, but one you would remember none the less!
Closest I got to Battersea was the London Heli routes, though did have a friend who worked there once upon a twice who invited me to visit.