the original (i.e pre norman) check of North v South was the boundary of the River Trent. the strong Viking settlements north of the river have given us some of the accents and colloquial phrases we hear today -
for example, not many people are aware that the East Midlands greeting 'Ay up mi aud duck' is directly related to a Viking greeting, with the root of the word 'duck' being related to where we get the english word 'Duke', i.e a person of renown or good standing.
Funny, I like to confuse Brett & Jenner by saying things like "Ow do lad and Ay up..." then correcting them on the lack of use for the letter U...
But as mentioned, there is no "right" way to say a word only that it's understood.
@BC & Jenner.... ColoUr.... ArmoUr...... heh heh heh...