I had fedexed my wife's visa application to the UK consulate in New York using Fast track. We had sent everything that Rajma indicated in her post except the Itinerary or the ticket. (because we were not sure of the departure date yet, therefore, didn't have any).
My wife received the packet back with the visa in exactly 5 business days. (although, I recall seeing a message online that said .. due to the high voulme of applications.. it may take 10 business days. etc.. So, LSB, you should be getting it anytime now.
A little background: A few weeks before my wife applied for the visa, I had applied for UK visa by fast track for business travel. I went to the consulate in person, all the gentleman did was to make a copy of the AP. I had the visa in hand in about 2 hours.
-Jay