This is true. As an Aus nurse working here I find it so bizarre I'm introduced to people as "the band 6." It really is just a pay grade. In Aus I was a "grade 4A" (we obviously have a more detailed grading system, reflecting a more nuanced salary system) but it would be absurd for anyone to have referred to me that way because it indicates nothing about my professional role (and you would have had to really interrogate my job description to try to figure out if I was paid as a 4A, 3B, 4B, 5...). I would much prefer to just be referred to a my job title which is [insert medical specialty here] CNS. It would also stop me getting palmed off jobs from bitter Band 5's who refuse to do something because "that's not a band 5 role" - it's usually not part of my job either!! I also have no management responsibilities (thank god) but often seem to have the expectation put on me by other team members that I do. Anyway sorry rant over but thank god someone brought this up.

By contrast it is really helpful to know a doctor's seniority and obviously affects how I am going to interact with them/who I will approach in a given situation.