It’s definitely 401 and 402, with 415 and 412 to follow at a later date. 401 is down for immediate use once it’s sent to Northern.
It was said to me earlier that 401/415 may even return to the Midlands when more ex-GA units transfer, as those are the ones EMR want rid of first, then once more Turbostars are in use the native 156s will leave permanently. I’m not sure on the truth of that so I will update once more solid info comes in on that
(Edited to include the correct units as information has since been updated since I received it)