I don’t know if we can point the finger at Saltburn and the endless TikTok homages that Emerald Fennell’s film about a big house has spawned. I don’t know if it can be attributed to the rise of floppy-haired posh chefs such as Julius Roberts or floppy-haired comics like Henry Rowley. Is it because a Game of Thrones actress has been cavorting on shooting weekends with the Hon Peregrine Pearson? Or because one of the world’s hottest DJs is the Marlborough-educated son of a barrister? Look, even th