I am not sure what exactly you are looking for in terms of content, but I can think of three books that might be of interest. Unfortunately,two were library items from many many moons age,so the titles and authors are long forgotten.
The first was written by the long time signalman at Challow signal box in Oxfordshire, whose name I very dimly recall as Adrian Vaughan.
The second was written by somebody who enter railway service either just before or early on in the Second War. He progressed from cleaner to fireman on suburban passenger trains,but his health gave way after the war,possibly as a result of poor diet and heavy manual labour,and he had to leave.
The third is tales of the Glasgow and South Western railway by David L Smith, which was published originally to include and expand on two articles published in the Railway Magazine , I think in the late 1920's or 30's.
https://www.amazon.co.uk/Tales-Glasgow- ... B004SHZZKGA niche publisher of railway books is (or probably now was ) David & Charles, and some of their output might be interesting to you.