As with any scheme, the Economic Case for HS2 (High Speed Two) will evolve over time and be influenced by many factors including:
- the design of the scheme
- external factors such as economic or population forecasts
- forecasts of HS2 passenger demand, benefits and revenue
- the guidance on forecasting and appraisal of transport schemes
This report provides a summary of the key changes made to the analysis that supports the assessment of the Economic Case for HS2 since August 2012, and the effect of these on the appraisal outputs.