I suppose I might add my own idea for the Scottish Central Railway, which isn't actually an imaginary railway, it even still exists, its the Perth to Stirling Line. Instead its an Imaginary Railway (company). Basically the SCR was planning on merging with the Edinburgh and Glasgow railway, to gain eventual access to, well I'll let you find out for yourselves. The merger was avoided in our time due to, its a little unclear, the E&GR threw a hissy fit over some timetabling, the SCR was swallowed by the Caledonian and the E&GR when to the North British, the rest is as they say. So the SCR in my mind, keeps things cushy with the E&GR, or someone falls off a horse at an impromptu moment. The merger goes ahead, the SCR builds its own terminus in Glasgow, snaps up the NBR (somehow) while the Caledonian goes the wrong way north and stays stuck on the West Coast.
Thoughts?