Chapotraphouse

Huh you're right, according to wiki:

It was then popularized by sociologist Michael Dunlop Young, who used the term in his dystopian political and satirical book The Rise of the Meritocracy in 1958.

That book was furthermore refused from print by Fabians and a lot more of presumably more or less left publishing houses. The term was unironically used in politics by Tony fucking Blair of all people, so it checks out. Before Blair i read it being used by Asimov and it also wasnt used ironically, as Asimov fascinatingly tumbled down the stairs trying to define "class" in his futuristic society (and came crashing headfirst into "caste").