With the turn down in traffic, I was bored and started brain storming, well okay, somewhat... CN4713 sits in track KA39 at Aldershot after a long day on 547.
M348's train rips around the south connecting track which will turn this train back in the right direction (east) and up the Albreda Sub hill at Spicer. BCOL C40-8M 4619 has the honours.