Sorry Rayaans, I disagree. The Lexus UK brochure states leather seats, not nuluxe, or artificial leather.
The F-sport std seats are cloth centers with "Tahara" bolsters, which is effectively vinyl.
The seats on the Exec and Premier models are stated as Leather, as are the options on the Luxury and the F Sport. If they were fake, they couldn't call them Leather. it says that in the UK brochure, the price list and on the UK website.