Now, sure, that salary might be too low, and working for the NHS seems like hell but it would seem the money isn't the main obstacle. Maybe not right now for 2 years ago that was a very good pay.
There are other pay-related issues. Marginal tax between 100 and 150 or so is incredibly high, around 60-70%. This is because many nasty things kick in there. Tax free allowance shrinking for example. Doctors are double screwed in some cases, as by law they have to contribute a lot of their salary to pension, and in this threshold often exceed their allowance - which is a real kick in the nuts, seeing how they can't reduce it, and anyway, pension saving should always be seen favourably in a place like UK. These are by the way some of the reasons for doctor shortages in the UK, senior doctors have little incentive to work harder, many cut their hours with little difference to their net pay.
But these aren't strictly linked to their headline salary.
[1] https://www.healthcareers.nhs.uk/explore-roles/doctors/pay-d...