In message , Geoff Marshall
writes
In answer to your enquiry, Terminal 4 station is expected to be closed from
January 2005 for around 20 months, to allow construction of a junction in
the area to extend the Piccadilly Line to Terminal 5.

Is the junction being built by one man and a dog (and only the man has a
shovel)?? Almost two years, to build a junction???
--
Roland Perry