My DH, who spent 38 years working in the railway industry, had this to say:
"Unfortunately, the railway in 2023 is very, very different from that which existed on 31.3.1994, the day before Railtrack became a legal entity. By comparison, the railway that was Nationalised on 1.1.1948 underwent relatively few fundamental changes in the next 46 years, apart from adding an overall structure at the highest level, wresting decision-making from the Big Four (LMS, GWR, LNER and Southern) that had owned it until then. Those companies had been pretty much bankrupted by WW2.
The mid-90s Privatisation split the industry into a myriad separate private companies, each with a legitimate profit-motive. They ranged from Rolling Stock Companies and Train Operating Companies to a man in a shed fixing wagons under contract. Nearly 30 years later, inevitably mergers and splits have seen further changes. Outside parties, in addition, provide manpower and machinery for contracted work. At one time, all this was under the BR umbrella.
Getting all that lot under one control again would be somewhere between those two popular expressions - herding cats and nailing jelly to the ceiling."