It was mostly Class 158s, but Class 156s (and occasionally Class 155s) could often be found working the same diagrams.
Also, the Scarborough - York / York - Scarborough shuttles were worked by Class 142s, Class 144s, Class 156s and Class 158s. I'm unsure as to whether Class 150/2s, Class 153s and Class 155s also worked the shuttles, but I'm pretty certain they would've done.
I thought it was actually quite fun around this time, because you never knew what was going to turn up! :grin:
I always wanted a 158 and for some reason it always seemed to be a 156!
