>>673English qualification or not, you need a strong command in the English language. If you are serious about this, read books in English that interest you. Read aloud, if you come across a word you don't know Google it for its definition and pronunciation.
Do you have a skillset? University Degree? All these things will help, but a strong command of the English language will be the most important seeing as the youth of Briton seems to have lost that. Unfortunately I don't quite know the logistics of coming over here and working from your country. You'd have to call an embassy to get some advice.
Good luck :)