Commonwealth English vs English English

Commonwealth English

noun
  • The generalised variety of English spoken and written primarily in the United Kingdom and its former colonies, frequently excluding Canada; always excluding the United States of America. (ie. non-North American English) 

  • The group of varieties of English used in the ex-colonial member states of the Commonwealth of Nations, in distinction to the varieties used in Britain itself 

English English

noun
  • A dialect of the English language that is spoken mostly in England. 

How often have the words Commonwealth English and English English occurred in a corpus of books? (source: Google Ngram Viewer )