You're looking for a "reclining bucket seat" (as opposed to a "fixed bucket" seat). Do read the product info though as there are a couple that adjust but DO NOT fold to allow rear passengers. Seriously there's loads of em, just have a look on Sparco, Cobra, Recaro, Corbuea etc website. Huge range in price from about £180 to £1000 PER SEAT.
Best bet is ebay or classifieds on here tbh.
EDIT: On second thoughts I'm not 100% sure what you're asking lol? Are you asking which OEM bucket seats fit a clio? As in you're thinking of grabbing the seats out of a Focus RS or Civic Type R etc?
Most/all OEM fitted bucket seats are just rebranded/retrimmed standard seats. E.g. Most Evos used "plain old" Recaro Trendlines - exactly the same as you could buy from somewhere like Demontweeks. I believe the Focus RS uses Ford-trimmed Recaro Sportsters (?)
Virtually all seat manufacturers make Mk2 Clio subframes.