Most of the companies omitted from the list are "joint"'companies eg M&GN ran from Nottingham/Peterborough to North Norfolk joint company Great Northern &Midland railways to compete with the Great Eastern in East Anglia, while simultaneously a GN&GEjoint line ran from March (Cambs) to Doncaster via Lincoln to compete with the Midland. This pattern was repeated nationwide, it was a jungle. There are no significant LNER staff records at TNA.
The LNER in common with most companies did not give sick pay, however they ran the Great Northern Loco Friendly Society which on merger day membership was opened to all staff in the new company.
It is effectively a census and it's records are held in Doncaster borough archive.