Pre-1980s BR was highly inefficient, although slowly improving, and, away from the main lines and big city stations, rather decrepit (but it has to be said that railways had always been like this ever since they had passed their first flush of youth). The prevailing trend was one of decline and, outside the Southern third rail area, service levels were a fraction of what they are today. But it generally worked, even though you needed a bit of nous to find your way around it.
The final decade or so of BR was one of fewer trains running higher mileages, shorter trains, introduction of DOO, diminishing station staff and the first steps in yield management (remember 'blue days' and 'white days' - urgh!). The decrepitude (but inherent functionality) of yesteryear was swept away and replaced by pristine, bare platforms with brightly painted furniture. The purse strings were being pulled ever tighter.
What we have today is essentially a continuation of the late era BR model (pro rata with the increase in passenger usage) but with a gigantic job creation scheme for managers, consultants, desk jockeys and clipboard carriers - not to mention the big black money pit that is the ROSCOs - bolted on.
There must be a better way.