The East Coast Main Line in the 1970s - part one 

I always appreciate additional information.

In simple terms when it was ye olde British Rail, headcodes (still used today btw) were specific to either regional or interregional services. It's fairly easy to understand the hierarchy of the system but changes were made according to each summer/winter timetable. They run in sequence according to point of departure and destination. It's not difficult to understand but unless you have the basic formula it's just a guessing game, hence my reply. Much respect and kind wishes from Slovenia. You might like my self-titled RU-vid channel. Keep on rockin'

@@BoogiesTrains With the greatest of respect, despite the random composition in your photographs, these are still valuable from a historic point of view. In a digital world it also proves that you are human ! The yellow 'cast' in most of your pictures was caused by the chemical processing. We were all subject to this during this era. Kodak were particularly crap as they had a virtual monopoly on the score due to brand image. Eventually Fuji shot them in the bollocks but the early Fuji film was nothing short of an experiment and the initial results were awful. You might be able to reduce the yellow 'cast' by using a software program but I'm no expert. The most important thing is that you have made a unique contribution to our railway history. At the moment I use a Sony A68 which is a complete monster. I swear by Panasonic Lumix as they use their own technology and the results are incredible. I use a G6 mirrorless and it serves me well. The photos of the Hungarian National Railway Museum on my RU-vid channel were taken with a LUMIX camera. Take it easy now. :)

I love the phrase 'random composition'. It describes my photography perfectly. I was never clear in my own mind whether I was photographing the train or the scene. Most of the time the result was something between the two.

@@BoogiesTrains Well it's too late to worry about it now so just look back at the positives. 😅 There are some very simple techniques that you can use to make better photos. Just remember that what you see through the viewfinder is what you will end up with. 😎👍

AndreiTupolev they wouldn't have batted an eye.

Line speed and signalling rather than trains. Virgin Pendolino and class 91 are both capable of 140 mph. I hear that HSTs have also achieved that as well. The issue is stopping safely within the signal sighting distances. There were proposals for 135 mph running north of Preston based on good visibility of several signals ahead but I wouldn't want to be onboard. As Jeremy Clarkson once said, it isn't speed that kills, it's the sudden stop.