I’m curious, what is in your last photo? The bits with the wires.
I have a few British locos, one is Darstaed, one is Ace and the other is Vintage but the box is identical to the Darstaed with a sticker that says Vintage. I’d bet that under the sticker it says Darstaed.
Do you know roughly when these were produced? I am curious if the drive train of that LNER unit is the same as my Jinty.