Upper class British speech, old and modern

What are the differences between old posh and modern posh British accents? My videos take a long time to make. I'd very much appreciate it if you feel able to support the channel on Patreon.   / drgeofflindsey   0:00 Mystery vowels and introduction 1:39 The four quadrants of the vowel space 2:15 FLEECE, KIT, LOT, PALM 3:49 GOOSE 5:14 FACE, happY 6:11 TRAP 7:58 Torn DRESS 8:57 PRICE 10:18 GOAT, MOUTH 12:32 STRUT, NURSE, SQUARE 13:47 Chain shifts 15:51 Advanced RP? 16:51 /t/, glottalling & spirantization 18:23 Those vowels