London Tilbury & Southend Railway for me! Apart from spending my early working life commuting on this line, I can remember on the evening of the withdrawal of steam locomotives the sound of whistles coming from Southend Central - the drivers must have been marking the occasion. I also believe that Joe Brown was once a fireman based at Plaistow shed.
I have lost the photo, unfortunately, but by the side of the line between Ipswich and Norwich was a large sign placed in somebody's garden saying in bold letters: "Be Sure Your Sins Will Find You Out".
Although none of the 1910 London Tilbury & Southend Railway rolling stock which was used on the Southend Corridor Express trains (Ealing Broadway - Southend On Sea) are still extant, I can recall reading somewhere that these had retention type toilets, which for the era was far in advance of what most (all?) other railways did.
When I was using the LTSR line in the early 1960s (steam days), very very occasionally there were obviously extremely old carriages attached to the normal stock. They had route maps on the wall that included the line from Barking through to St. Pancras, and they were also corridor stock with lavatories, a great improvement on the compartment stock that was normal then. I have a feeling that the lavatories drained into retention tanks, but I don't know why I think that: perhaps someone more knowledgeable than I told me.
No more it isn't, but Scunthorpe's steel works are where they are because of the local geology. However, the good quality ore is all mined out now. (Are there any iron ore mines left anywhere in the UK?)
The legacy of having pioneered the industrial revolution - we also now import nearly all our coal as well, but at least iron and steel can be recycled.
Scunthorpe only started producing rails ten years ago, when Corus closed its 130-year old Workington plant. (Apparently the dimensions of the site of the Workington plant, hemmed in between the sea and - ironically - the railway, were too small to produce rails of the lengths now required by the industry)
I remember reading in a book about Ian Allan's early life that at one point he had to inspect rails produced at Workington for quality. I imagine that must have been quite monotonous.