4.25 HS2 Ltd also noted that this ‘Inverse A’ network could be built in stages, beginning with the legs to Manchester and Leeds. Each of these two legs would be likely to have a strong business case as an addition to the initial London-Birmingham line, and their completion would deliver the core ‘Y’ network described above, as well as providing a foundation for any continuations north.
4.26 HS2 Ltd’s analysis is summarised in Table 4.2 below.
Table 4.2 Comparison of HS2 Ltd’s wider network options
Journey Times (hrs:mins)
Route - Inverse A - Reverse S - Reverse E
London-Manchester - 1:20 - 1:20 - 1:40
London-Leeds - 1:20 - 1:35 - 1:20
London-Newcastle - 2:00 - 2:07 - 2:00
London-Glasgow/Edinburgh - 2:40 - 3:17 - 3:10
Birmingham-Manchester - 0:40 - 0:40 - 1:28
Birmingham-Leeds - 1:05 - 1:07 - 1:05
Manchester-Glasgow/Edinburgh - 1:45 - 2:48 - 3:15/3:30
--Business Case
-Infrastructure Capital Cost
£52.2 bn - £44.3 bn - £49 bn
-Benefits
£103 bn - £73.9 bn - £87.3bn
-Indicative Benefit:Cost Ratio
2.3:1 - 1.8:1 - 1.9:1
4.27 In considering the journey times and benefit:cost ratios set out above, it should also be borne in mind that the journey times from Birmingham to Leeds and Newcastle for the ‘Inverse A’ and the ‘Reverse E’ include stops at additional stations in the East Midlands, South Yorkshire and Teesside, offering wider connectivity benefits that the ‘Reverse S’ cannot provide.
4.28 Although HS2 Ltd’s work suggests that the ‘Inverse A’ is likely to be the best candidate, it does not offer a definitive view as to the precise configuration of the optimum wider network, given the strategic nature of its analysis. Rather, it limits itself to a small number of broader conclusions, which are set out below:
- There is a good case for going on to develop high speed lines beyond the West Midlands and, of the networks we have looked at, a network with two branches either side of the Pennines performs best.
- While there appears to be a good case for continuing High Speed Two on to the North West and Manchester, there looks also to be a particularly strong case for a branch to Yorkshire and Leeds, via the East Midlands. Both appear to be strong candidates for more detailed work as part of the next stage of development.