However, it's a similar story as with Manchester or other major Northern conurbations, where the size of the area is still stupendously higher than anything HS2 could ever transport in time for work every day. Non-stop timings of 2 hours might be possible, and to get to work before 10am it would leave a realistic window of only an hour or two for commuting services to depart Scotland. Since so many trains would need to arrive in London before 10am anyway, the same 2-3tph limitation will exist as is planned already, and that means in total you could only really shift at most 3300 people a day for work.
Plus Manchester trains - of which you could four or five per hour if you wanted because the line will be almost empty. And a couple to Birmingham (as the Northern powerhouse and all that is supposed to turn thsee into significant cities - and Manchester/Birmingham together pretty much match Scotland).
We know that these lines can take 18tph, and at most here will be four london trains running.
2 hour rush hour means 8 London trains (I assume the old Heathrow paths will likely be held for any classic extension to Scotland - 2tph each for Edinburgh/Manchester), 8 Manchester and 4 Birmingham.
16 400m trains can carry a lot more than 3300 people.
Potentially up to 20,000.
Getting people to start and end work at different times has been attempted for decades and has never worked, so I can't see how it would be realistic to assume in future that some people would commute to work any later. 3300 people is less than 0.1% of the population of Scotland, and even if their individual employment has an effect on 10 other people it wouldn't be 1% of the entire population. It's certain that many towns of only a few tens of thousands of people in Metroland could and will send more people to work in Zone 1 every day than the entire Scottish nation.
10:1 is probably about accurate, but 3300 is definitely on the low side.
Metroland reaches Manchester with HS2 - which is half way to Scotland already. The speed and capacity of HS2 is orders of magnitude greater than today.
You could be looking at 100-200k+.
Which is quite a significant fraction of the Scottish population.
I still cannot see Denmark and Sweden re-uniting under a single monarch any time soon.
But uniting is a hell of a lot harder than not fracturing.
The line would be funded in the same way as any other major infrastructure project is funded. Some of it would be from passenger fares, some of it would be standard public investment. There are costs involved for both parties in not building a captive line to Scotland, like the costs of continued air travel into the South East.
The "cost of air travel" to England is negligible - since we are going to be building new airport capacity either way, the marginal cost of the extra slots is tiny.
There will also be a trend towards longer check in times as divergent security policies take effect - reducing the air travel market significantly.
None of this is going to be able to justify rUK spending more than a pittance on such a project. To think otherwise is fantasy.
Scotland would have to foot the entire bill on it's own - and with the collapse in oil revenues appearing to be near permanent I don't think it would be able to afford it.
And yet the flows between Scotland or Ireland and London are on par with the flows between London and Paris. If Eurostar can start to justify the construction of the Channel Tunnel and HS1, Scotland can justify completing HS2.
It can't - Eurostar has been a colossal white elephant in hindsight.
People won't make that mistake again.
I'm sure Network Rail Infrastructure (rUK) Limited would be delighted to be told it had to reserve paths on the WCML for Scotland trains to trundle along.
Firstly - why would NR have to do
anything?
NRs primary duty is to operate the railway infrastructure in the UK - control of paths is primarily in the hands of the DfT.
The DfT's primary responsibility is to the people of the United Kingdom - if there are paths available that it wants for services to serve said people then an open access request from a foreign operator can take a hike.
The capacity squeeze on the northern half of the WCML will make it hard to path anything in - and a HSL will be too expensive to be worth the cost.
With the intercity trains to Scotland gone there will be more paths for stopping trains to places like Preston and Lancaster.
Where else in the entire world has infrastructure been used in this way? It's utter madness, and if you start chucking away the idea of serving Scotland whatsoever a good number of the HS2 design decisions start to make no sense at all.
Where else in the world has there been a crowded mainline serving stations on one side of the border and the foreign power has succesfuly demanded that domestic services be hamstrung to allow through their preferred cross-border trains at higher speeds?
I am sure that NR could find Scottish trains a path - just that it would stop at lots of stations and take 5+hrs. To make it easier to slip into the English stopping pattern.
If you're only going as north as Manchester, you really may as well follow a completely different arrangement for the entire line since long distance end-to-end speeds would be somewhat irrelevant when rail is already faster than air within England.
It might be faster - but faster is not good enough.
You have to absolutely crush it.
And once we are building a new line, you might as well make it high speed because it turns out not to cost much more.
We aren't building a high speed line to support some theoretical northern extension - the theoretical northern extension having good travel times is just a bonus.
The Central Belt of Scotland is roughly equal in population to Greater Manchester or the West Yorkshire built-up area, so it's not an insignificant part of the United Kingdom.
It won't be part of the United Kingdom if independence happens - at which point it is just another bunch of foreigners that the British government could care less about. The only way the HSL can get built is if Scotland remains part of the United Kingdom - and the psychological impact of a 2hr journey time will be enormous.