@Bumble_Bee. I intended sticking to the IR liveried era, however, some of the liveries look better on some locomotives and coaches than they do on others. When the 121s were released I had every intention of just getting one or two of each of the IR/IE liveried versions but bought the greys and the black & tans instead. So, like yourself, I like to mix my stock from different eras - not hung up on what exactly ran with what in what year and at what time.