Ive just managed to preorder a scotrail 47 on the Hornby site. It dosent show if you search for it but if you go in 2021 releases it does show up there and allow a preorder to be put in.
The site is very slow again tho
Hornby R30079TTS ScotRail, Class 47, Co-Co, 47712 'Lady Diana Spencer' - Era 7 - New for 2021 - Shop