Gutter Boy
Tim Sherwood
You say "proper title", and "demoted". It's a pretty sound rule of professional life that only knobs retain the title of Dr outside of an academic or medical context.
Things may be different in Germany. They often are.
Pretty much everywhere in the world uses them more than the UK. Which is odd considering how class and hierarchy conscious we are with most other things.
Martin Luther King, Brian May, John Cooper Clarke, the Klitschkos, Liam Fox, David Owen and Vince Cable all use(d) theirs outside academia/medicine. I can't actually think of anyone who is entitled to use it, who doesn't