One recalls once when working in Main Building, a new arrival commenting: "Why are so many of the Registry staff 40 year old bachelors still living with Mum in Essex?"
Hard to know if that was cause or effect, though. If they had the oomph to earn/want to earn £50,000 a year then would they have stayed in the Registry job for twenty years? I've met loads of people who started off low, and made it good, very good in many cases.