I worked in the early 70’s as Personal Secretary to the Advertising Director of Kellogg’s in Manchester. My boss was well spoken, of course, but liked my broad Lancashire accent. A lot of the middle management, particularly the ‘Cheshire set’ which most of them were, wondered out loud how I could or should hold such a position with such an accent.
This got me down to the point where I was grinding my teeth in my sleep and worrying about it when my dad pointed out to me that I was a northern girl (I was only 20) working in a northern factory! I just shrugged my shoulders after that and got on with the job.
By the way, it was a wonderful job, I took his fresh flowers home every week when he got new ones, I got all the magazines and frequently gifts which were going spare. Of course, we all got reduced cereals as well! I went on to hold some very prestigious posts and my accent wasn’t a problem in any of them.