The following links go to HS2 Ltd/Government sites, to action groups opposing HS2, and provide the basic information about the route.
High Speed 2 route through Offchurch (link to HS2 map)
A key source for challenges to HS2 is the Action Alliance of local action groups – www.hs2actionalliance.org – contains news, documents and contacts.
An independent critique of HS2 can be viewed at http://www.bluespacethinking.com/ Look at the document on UK Transport Policy – High Speed Rail.
This presentation by the Chilterns Conservation Board has some photos showing what the railway would look like. Go to http://www.chilternsaonb.org/hs2/ and look at the item dated 17/05/10.