She has a southern British (English) fairly educated English accent.
That woman's accent is fairly typical of many reasonably educated people in southern England. I hasten to add that many reasonably educated people from southern England do not speak with that accent these days.
I'm really not sure what point you may be trying to make here. There is no connection between somebody's 'degree of education' (whatever that means) and the way they pronounce words.
If you are thinking about the type of school that a person has attended (i.e. a public school), I do think that these institutions can reinforce in a student a pre-existing accent that is much more to do with
social class than anything else. It is statistically likely that students enrolled at expensive public schools are from middle or upper class families. Furthermore, it is not accurate to claim that public school attendees are 'more educated' than anyone else, even if you believe that the general level of education is of a higher quality.
If, by 'educated', you are talking about experience of tertiary education (university level), I certainly don't think this has any bearing on shaping a person's accent either, not least because one's accent is likely to be fixed by the age of entry.
Also, if the woman in the video speaks with a 'fairly/reasonably educated' accent, are you suggesting that there are those who are 'more' educated than her, who speak differently? Or that there are those who speak with a 'more educated accent' than her?
I'm sure you mean no offence, but I find this use of 'educated' slightly worrying. It seems to me that it has sometimes historically been used euphemistically and derogatorily by the upper/middle classes as a means of class identification, for whatever end.