Assuming HS2 phase 2a is completed in full and fast London - Edinburgh are diverted away from the ECML to the WCML, the only high speed trains to use the ECML will be those which terminate at Newcastle. This begs the question as to what the service provision beyond there could look like with fewer long-distance intercity trains.
Firstly, Edinburgh would still merit a direct link to Leeds and Sheffield, while the ECML through Northumberland would remain the fastest route between those places. I would have 1tph to each of Leeds and Sheffield (with the Sheffield service taking the faster route via Doncaster as opposed to via Leeds). These two tph should be the fast trains between Edinburgh and Newcastle, with one calling only at Berwick Upon Tweed and the other only at Alnmouth.
Secondly, even with the fast London - Edinburgh trains diverted via HS2, there will still be demand for direct service to the capital from Northumberland towns. I would therefore have an hourly ECML semi-fast from London to Edinburgh calling at more places than LNER does now. North of Newcastle, it would serve Morpeth, Alnmouth, Berwick and Dunbar.
Thirdly, with fewer trains operating than today, I would make one giant leap to create a regular stopping service between Newcastle and Edinburgh. This would call at every single intermediate station and make use of passing loops at Belford and Dunbar to allow faster trains to overtake. I’ve not attempted to timetable this in with the fast services but if it isn’t possible, then an alternative option could be to split the service at Berwick Upon Tweed.
All of the above is assuming that East Coast Trains (Lumo) are no longer running by this point. If they are however, that will be an extra path in addition to the above and in this scenario it may be worth merging the separate Leeds and Sheffield services into one (via Wakefield) to keep track capacity free for the stopper.
Firstly, Edinburgh would still merit a direct link to Leeds and Sheffield, while the ECML through Northumberland would remain the fastest route between those places. I would have 1tph to each of Leeds and Sheffield (with the Sheffield service taking the faster route via Doncaster as opposed to via Leeds). These two tph should be the fast trains between Edinburgh and Newcastle, with one calling only at Berwick Upon Tweed and the other only at Alnmouth.
Secondly, even with the fast London - Edinburgh trains diverted via HS2, there will still be demand for direct service to the capital from Northumberland towns. I would therefore have an hourly ECML semi-fast from London to Edinburgh calling at more places than LNER does now. North of Newcastle, it would serve Morpeth, Alnmouth, Berwick and Dunbar.
Thirdly, with fewer trains operating than today, I would make one giant leap to create a regular stopping service between Newcastle and Edinburgh. This would call at every single intermediate station and make use of passing loops at Belford and Dunbar to allow faster trains to overtake. I’ve not attempted to timetable this in with the fast services but if it isn’t possible, then an alternative option could be to split the service at Berwick Upon Tweed.
All of the above is assuming that East Coast Trains (Lumo) are no longer running by this point. If they are however, that will be an extra path in addition to the above and in this scenario it may be worth merging the separate Leeds and Sheffield services into one (via Wakefield) to keep track capacity free for the stopper.
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