Isn't this the style Osbert Lancaster claimed to have 'created'?  I don't know it, but I've seen the style done by Viyella and I really don't like it.  The M&S connection; yes; nothing to do with Princess Di at all, then (although it might well have been, I've rarely had a conversation with an American woman in which I wasn't quizzed about all aspects of our royal family).  More crossover.  Might please Eduard.

I'll wear a spread collar with a sack suit whenever the urge strikes me.  Even with a knit tie.  The buttondown can get monotonous.  I don't think this was ever uncommon among sack suit wearers.

This begs the question: would an American accustomed to a soft collar be comfortable with Anglo stiffness?

Top post!

Very nice.  Very neat.  I approve, but would others?  'Pinched and over-neat?'  I don't think so.

Bill had his moments of looking, in the first place, slightly loopy, in the second place, after marrying that nice, plump blonde, overfed and a bit smiley.  Off the drugs by then and into the funky shirts and jackets so beloved of jazz musicians who'd given up on their BDs and loafers.