I'm from the Black Country and say 'mellow' - and almond 
Round here the shop is 'Prymark', we keep the car in the 'garridge' (when did garage have an h in it?) walk on grass, nor grahss, take a bath, not a barth, and wear glasses, not glarsses. Sadly, my eldest AC moved south, and has gradually been lured to the dark side of pronunciation...
My conversations with DGC are interesting, as their family eat lunch and dinner, and I (of course) eat dinner and tea - which has led to a few misunderstandings..!
Isn't the English language wonderful?