Clerk was always Clark ~ Clerk being American pronounciation! this is accent

Dialect is words used in that area ~ lots of differences certainly just in England from Yorkshire to East Anglia and beyond

Dialect and accent together can make understanding difficult if you are a "foreigner"

Ray

BTW It well know I am a short "arr" person ~ lol yes I know ~ but it

really does aggravate me when confronted on tv with the "long arrs" of the Southern English speakers and the word "withdrawal" has one "r" aagh!!