Carefully put them in cardboard boxes that are good fit size-wise. Stick a bit of crumped newspaper around it for padding. Carefully drive it to my dad’s a few weeks before moving, then pick it back up a few weeks after. Accept that there’s always going to be some putting back together to do.
That Crocodile locomotive is brilliant! I don’t think I’m going to buy one, although I am really tempted. However if they did the Manchester Metrolink T68s in a similar vein it’d be a shut up and take my money situation.