In that case, here are my predictions. I’m focusing mainly on modern image as my knowledge on steam & early diesel is extremely limited. Likely Re-liveries of the HST’s, so many to choose from so guessing is a bit difficult. Another Flying Scotsman variant. Possibly the version with the white roof. More LNER A1, A3 & A4 Pacific’s More Class 66’s in various liveries. More of those little Ruston shunters & Pecketts Possibly 4-VEP in NSE and Connex liveries. 67027 in Gbrf livery. Network Rail Class 153. Class 73/9’s with old incorrect tooling. Wild Card Class 313 and other variants that can be made from the same tooling. This is based on a hint, so not completely wild guess.