In the early 1970s, the PEP stock ran on BR Southern Region and are designed to be used for commuter services. Two 4-PEPs, 4001 & 4002 were built in 1971, followed by a 2-PEP in 1972. They ran in passenger service for a few years.
I have been doing the 4-PEP this week and is just finished, still to be tested at the moment. Here it is, numbered 4001:
Yet another prototype addition to UKTS, I'll keep you posted as it happens
It appears UKTrainSim is all quiet on the western front today as it is christmas; however I've done 2-PEP model today. It didn't take long, just half an hour to convert to 2 Car PEP unit. It have not been taken to MSTS rails yet, but here it is