Doctors earn very poorly for their level of intelligence and education. Could easily get double working in the city.
Anyway the real money is if you supplement your income with locum work. Or totally replace your income with locum work.
For example,
Annual income figures of a fulltime locum working 40 hours a week Monday to Friday:
Average earnings of a Locum SHO = £94k
Average earnings of a Locum SPR = £125k
Average earnings of a Locum Con = £175k
Now just think about that for a moment.
My friend at Goldman Sachs currently earns £78k after bonus for working 70 hours a week.
If I wanted to locum as an SHO, for 40 hours work, id earn probably more than £95k.