The analysis presented in the September 2013 report “Regional Economic Impacts of HS2” undertaken by KPMG on behalf of HS2 Ltd identified the impact on productivity for all areas across Great Britain, including those not served by HS2. The findings presented in the September 2013 report show the net impact on productivity—that is the sum of total gains in productivity minus any losses.
Of course HS2 doesn't serve all areas and the KPMG figures reflect that. The benefits are naturally greater in the places the line serves directly. This analysis does not include the benefits of other investments to boost the transport system. This Government will invest £73 billion in the next Parliament, of which £17 billion will be spent on HS2, and this will help places not being served by HS2.