Non planned as far as I know, but the Command Paper raises it as a possibility.Is there any junction linking HS2 with the MML? I couldn't see one anywhere near Toton, HS2 just flies over Trent Junction.
Trent Jn would have been difficult, but I would have thought there is an argument for linking with the MML somewhere, enabling diversionary routes & other route options for classic compatibles.
"There is also scope for new services, not starting or ending in London. Leicester could gain a service towards Leeds from the existing line north, joining HS2 in the East Midlands. Subject to further electrification, and a connection to the high speed line, Bristol could gain services running on the existing line to Birmingham, and then on at high speed towards Leeds and Manchester, Newcastle and Scotland."