In regional divisions the Lickey lay just over the border in the Western Region, although all trains banked up were headed into the LMR at the top. The loco point at Bromsgrove was closed when unassisted climbing became common, but various services still were, for which a Class 37 (sometimes two) was sent all the way from Gloucester to assist, and then back afterwards.
I recall banking out of Glasgow Queen Street in the 1970s. For hauled services it was the loco that had brought in the stock, whatever that might be. A climb in a well-loaded 3-car Met-Cam (I was never banked with one) was a painful experience, maybe 20mph at the top. In parallel to this line was that from Bellgrove (and southern Glasgow) up through Springburn to Cowlairs, which had some notably heavy and not well powered freights, particularly the coal MGRs from Ayrshire collieries to Longannet power station in Fife, with just 2 x Class 20, whuich came up the hill full throttle at a fast walking pace - there must have been a plan for if it didn't make it, they could never have got restarted again.