I thought that was the plan anyway? HS1 trains come off the fast lines to trundle through Kent dont they, or did I make that up?
The details are not yet decided. It's worth looking at the illustrative options map that was circulated at the same time as some of the Northern Powerhouse discussions:
For the Leeds to Manchester corridor there are basically 3 options:
Option 3
A completely new high speed line from Manchester - Leeds directly.
Option 8
An upgrade to the existing Manchester - Leeds line.
Option 2
A completely new high speed line from Manchester to HS2 between Sheffield and Leeds that then uses HS2 into Leeds.
What this link allows is for Option 2 to be built from Manchester to connect to HS2 somewhere near Barnsley and then leaving HS2 in the Hunslet area and running through Leeds station to provide direct high speed services from Manchester to Hull, York and Newcastle.
This is obviously much more flexible and useful than only being able to run end to end Manchester - Leeds services on HS3.
It also means the new Leeds HS station does not need additional platforms for Manchester services as they will use the existing station.
However if Options 3 or 8 are chosen then this chord would not effect HS3 services at all as they would still run through the existing station but would not have any need to join HS2.
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You are too kind, for my 'speed read' read 'insufficiently read'!
Actually he could have made it clearer on his diagram; it would have been so simple to do.
No problem
How does that look, I can't see how east-west HS3 from Manchester (if you meant that) uses HS2, unless that link must go via Sheffield - is that what you meant?
If east-west HS3 does that, perhaps Victoria was a better location there after all, although Victoria is hardly central. Sheffeld needs to think its office location policy, it seems to me. The old city, what's left of it, does not seem to me to be a big draw for HS services, as others have pointed out.
Hopefully the diagram above makes it a little clearer. If Option 2 were chosen Manchester - Leeds services would utilise HS2 south of Leeds but not travel via Sheffield.
The illustration above perhaps suggests Option 2 serving Meadowhall for Manchester - Sheffield services. My expectation would be that actually Sheffield Victoria might be more likely. An HS3 Manchester - Leeds route passing north of Stocksbridge would connect relatively easily to the freight line at Deepcar and run into Sheffield Victoria.
You could then run through Sheffield and rejoin HS2 from near Killamarsh to Toton and potentially provide something like a Manchester - Sheffield - East Midlands - Leicester service.