Harry, I assume that you have seen the current copy of "Rail" (December 29th 2010-January 11 2011).
The Editorial Comment by Nigel Harris is on HS2 and there are more details on HS2 elsewhere in the magazine.
Two links from the Editorial are worth studying:
http://www.greengauge21.net/publicat...tics-are-wrong
http://www.telegraph.co.uk/comment/t...-together.html
Hope they are useful.
Best wishes,
John H-T.