I have noticed in the last 20 years (I am nearly 53) regional accents become a lot more acceptable. I got ridiculed for my (not that strong but distinctive) Scottish accent in London in the eighties and also at uni in Edinburgh. I hadn’t met the very rich before that and it was a shock. I was into drama but after feeling isolated among the RP speakers I didn’t return to a group and stopped acting altogether. They seemed to think that anyone with any kind of regional accent was extremely poor and lower working class. There was a clear class divide at the university.
As a student at school I was mocked by the more strong accented kids (in Fife) and told I had been sent to elocution lessons by my mum which was incorrect. There seemed to be a thing about talking as broad as possible to avoid being called a snob (inverted snobbery). I have been told several times I sound like Kirsty Wark and am happy with this. I now live in West Yorkshire and have adopted some of that dialect but never lost my Scottish accent.