If I recall correctly, the original question was something like . "English or American ENGLISH" not accent, but we all got on our bikes
Having said that, I would much PREFER the Oxford English spellings and pronunciation AND accent. We don't want Sherlock Holmes and Watson saying:
"She'll be right, mate" (Aussie)
"That's OK Pal" ( Nothern American)
"hosta la vista" ?????? or anything else "foreign" .......
Sherlock was OLDE WORLDE and set in ENGLAND, when times were tough, and smoking pipes was "manly" ..... let's not get carried away with making Sherlock "modern" got goodness sakes.