Impact assessment

Reports and maps for HS2 Supplementary Environmental Statement 3 and Additional Provision 4

New or revised reports and maps submitted as part of the Supplementary Environmental Statement 3 and Additional Provision 4.


CFA5 Northolt Corridor: Report

CFA5 Northolt Corridor: Map book

CFA7 Colne Valley: Report

CFA7 Colne Valley: Map book

CFA9 Central Chilterns: Report

CFA9 Central Chilterns: Map book

CFA12 Waddesdon and Quainton: Report

CFA16 Ladbroke and Southam: Report

CFA16 Ladbroke and Southam: Map book

CFA19 Coleshill Junction: Report

CFA19 Coleshill Junction: Map book

CFA20 Curdworth to Middleton: Report


This volume describes the supplementary environmental information within Supplementary Environmental Statement 3 (SES3) and amendments within the Additional Provision 4 Environmental Statement (AP4 ES). It also reports on their likely significant environmental effects compared to those reported in the main ES, as updated by the SES, SES2 and SES3. The AP1, AP2 and AP3 amendments are also taken into account, where relevant.

Reports are broken down by community forum areas (CFAs). Reports 4-26 are supported by a map book containing a series of maps. The map books contain, where relevant:

  • construction and permanent features of the HS2 scheme
  • photomontages from selected viewpoints
  • significantly affected viewpoints during construction
  • operational airborne noise and vibration impacts and likely significant effects.

There is no report or map book for CFA 21, as there are no design changes or amendments within this CFA.

Published 12 October 2015