Characteristics of (early) Received Pronunciation (Videoanalysis), Changes in RP

[Melody_Pond]

Hello,
for school I am supposed to analyse how received pronunciation changed over the years with the help of the following video.
Then I need to compare it to todays received pronunciation found for example on the BBC News.
I have read a few books on the subject, like Gimson, but I just can not hear any specific characteristics of received pronunciation.
The only thing I get is the very present r sound in for example ”hear”.
Maybe somebody could tell me what changes happened to RP over the years, or just what sounds are very typical.

Thank you very much in advance!

here is the video: https://www.youtube.com/watch?v=tVo_wkxH9dU

Best wishes,
Melody

 

[Melody_Pond]

Thank you for your response. I hope to get an answer there!

 

[Tdol]

Received pronunciation is less marked in the UK nowadays. It still avoids regional features, but things like the length of vowels has shrunk, and the speech is more connected, less deliberate, with more blurring and joining the words. I hear more traditional received pronunciation on things like Channel News Asia, the Singaporean news channel, than I do on the BBC, which has far more regional accents than it used to. RP used to sound posh, but now it sounds more non-regional to me.