Ric Euteneuer wrote to uk.transport.london on Mon, 28 Feb 2005:

*And* then the traveller is also queuing up for, and paying through
the nose for a cab, dragging their "bunch of bags" all the while. I
would contend that travelling on the Piccadilly Line outside the rush
hour will take about the same time as HE+cab to many destinations -
including expensive hotels in Hyde Park and/or Kensington Park

I believe you can get a dedicated minibus to various hotels, which is a
good compromise - cheaper than a taxi, but easier than wrestling with PT
when you're jet-lagged.
--
"Mrs Redboots"
http://www.amsmyth.demon.co.uk/
Website updated 20 February 2005