News Flash: doctor isn't the top of our class system.

Even if you become a doctor you still won't be a part of the aristocracy.

The best you can do is upper middle class. That might mean you're the head of a FTSE100 company, which is still pretty good but you won't be upper class until the Queen dishes out a knighthood for all great works of charity you'll do.

...and even then though you'll probably still wear the wrong kind of shoes and hold your knife a bit funny at supper.