Actually vampy if you read that document a junior doctor (House Officer) earns £19,700 in their first year for a 40 hour week (two thirds of a tube drivers salary and after 3 years of university-at that stage, as you say they still have a lot further to go)!
There are lots of higher figures in that document Re-Heat posted - but (as a parallel) for some reason if you ask anyone what a pilot earns the most common answer is £60K. Many do earn that - but many more do not, no-one quotes £20k for a turboprop FO. Doctors have the potential to earn more - so do we and we don't kill people the first day we start work, we sit in a classroom for weeks, then are closely supervised on an aircraft then work under a Capt for years.
Doctors hours and salaries have been changed recently (NHS trusts are still ordering doctors to lie about how many hours they work though since following the 'proper pay' for hours worked they have found that they are all going bankrupt) but it is still only a few years since my spouse worked 120 hour weeks as a junior doctor (not always but certainly not rare) and those weren't spent reading the paper either. And before recent legislation came in that worked out as about two thirds of minimum wage! The only reason a doctor earned more that a waiter/ress (and that is before tips) was that the food employees hours were protected by law!
I am a pilot and I sit in the right seat of a jet. I would love to earn more (who wouldn't). But do we deserve it? During my ATPL exams I met many people who would not pass GCSE maths by a country mile but scraped through the exams (and kept quoting how they were an equivalent to a degree! - see wannabees forum several months ago for further if you wish). If you have the co-ordination to drive a car you can pass your ATPL and if you are lucky you can get a job. Does that merit 100K a year - I don't think it doea. Do I want that 100K because I stuck at it and went through the system - you betya. Do (or should) the earnings of other professions affect our own - no.