Whilst doing my teacher training, the lead lecturer suggested that I attend lessons so I wouldn’t speak with a Yorkshire accent. I didn’t.
I was once marked down by a lecturer in Austria for speaking with a Yorkshire accent instead of RP in an EFL class. English is not my native language. Now I have a Welsh accent from when I did my PhD in dialectology at Swansea University. I’m proud of it.
I remember being so happy I’d made a friend on my first day at uni. Later that day I heard her mocking the way I said ‘cake’ (in my Yorkshire accent) to another student.
My girlfriend at uni (now wife) admitted that she didn’t believe I’d really got 4 As at A level because of how stupid I sounded with my Yorkshire accent. I had to show her the certificates in the end.