The Trainbow livery for Class 395 isn't shown in the selection menu on PS4, but the same livery for Class 375 is shown twice. Must be a swap problem!
Trainbow livery isn't missing. It's been left as non-selectable on purpose. It will randomly appear within the game environment on it's really life counterpart 395012.
There isn't that's why! It was just added in to provide more services at short notice. I expect it will disappear soon.
Only putting out thoughts I have not had much time to get into SEHS since downloading it. I am hoping that this weekend will give the time to play it.
...got him on an afternoon service at 14:27 p.m. from London St. Pancras! It's just an exclusive livery for 395 012. Also got the submarine for the screenshot.