How far back do you want to go? Even pre-privatization, there wasn't a "uniform strategy" - you had NSE, Inter-city, Provincial doing things up north, Scotrail in Scotland, not to mention the variety of PTEs who had their own schemes.
I greatly offended my mother's psychiatrist once with a similar thought. He was using my mother's suicidality as proof that she needed inpatient treatment.
I told him - "She suffers from migraines, and for 3 out of 4 weeks in an average month she must spend the entire day immobile in a dark room. There are no treatments in the near term which are expected to improve her outlook. The pain is debilitating. Doctor, who is "insane" - the person who wants a way out of the constant agony, or the person who says "More, please!""
I believe that the right to life as enshrined in the Constitution (and endowed by my Creator) must, inherently, also include the right to end that life, if a man (or woman) so chooses.