On the subject of doctors. The degree is five years, the first three or four ( can’t remember now ) gains a BA or BSc medicine and the last year the MD I seem to remember
it seems the army is possibly the biggest culprit my father told me a tale of a cruise they went on a couple of years ago, with a gentlemen who insisted on being called captain all the time and was generally an arse... hat on no talking etc which meant little to those around him.
anyhoo one evening at the bar he swanned over to pops, who enquired which ship he commmaded hoping for a tail or two. He then replied that he was a captain in the royal logistics core. Pops commented that it really wasn’t the done thing to go on about your rank below major. To which the Captain got a tad upset and after which my father request he call him Sir on every occasion and afford him all the privileges of being a Retired Major or alternatively he could drop all this and be on first name basis...... it soon stopped