Can check style guides for publications and academic institutions in the UK, Australia, and the like. BBC, ABC, etc. Back in the day it was simply considered wrong, now most non-US publications and academic institutions simply advise not using it unless it helps avoid ambiguity. E.g. the excerpt below from the ABC style guide:
Oxford comma, serial comma
A comma placed before the last item in a list: she ate grapes, toast, and cheese. Avoid unless it aids the reader or prevents ambiguity.
American style guides are generally more in favor of the Oxford comma. APA mandates it, MLA says do whatever makes sense, and Chicago says pick one and stick to it.
Can check style guides for publications and academic institutions in the UK, Australia, and the like. BBC, ABC, etc. Back in the day it was simply considered wrong, now most non-US publications and academic institutions simply advise not using it unless it helps avoid ambiguity. E.g. the excerpt below from the ABC style guide:
American style guides are generally more in favor of the Oxford comma. APA mandates it, MLA says do whatever makes sense, and Chicago says pick one and stick to it.