The sound of voices is subjective - as this thread indicates, and one person's attractive voice is another person's cat sliding down the proverbial blackboard.
My dislikes tend to pair the individual's voice with their personality - I can like or dislike both because of who they are as well as how they sound.
I never liked Michael Parkinson because he is a 'professional Yorkshireman', yet I love the voice of Geoffrey Boycott, so it's not the accent per se.
I love Lancashire accents such as Peter Kay and Paddy McGuiness, and Geordie accents - the exception to my rule is Sara Millican, I like her voice, but hate her comedy.
I loathe the sound of Michael McIntyre, his fluty voice and his awful persona mean I can't watch him, and for some reason, I hate the sound of James Nesbitt, I can't watch anything he is in.
I don't mind Alisha Dixon's voice, but I can't abide her laugh, although I am sure I could learn to put up with it if she moved into our spare room!!
That's all I can think of for now - may return if I think of something else.