How to speak a correct English or is there "a standard English"?

The problem raised in the article is in its title: "How to speak a correct English or is there a standard English?". The background and formation of both "standard English" and the languages the ethnic groups of Great Britain speak has been analyzed in the article. The article provides evident to the fact that the development of languages is preconditioned of historical and cultural development of the mankind; and the language itself is a flexible constantly developing system.