Curso de inglés avanzado de BBC Learning English. 30 unidades con sus 4- 5 sesiones cada una de ellas. “This is a course for learners of English who are studying at a relatively high level. It is designed to help you become an even better speaker and to help you move towards a near-native level of English.”
http://www.live.bbc.co.uk/learningenglish/english/course/towards-advanced