I just came across a site in Perth that deserves a mention... teachers who teach for the passion of the dance Perth Tango Emrace teaches classes and runs milongas for free...
"We have been exclusively trained by Argentine Teachers both in Perth and in Argentina".
"We see Tango as having an inward focus rather than seeking to impress an audience. The goal of the tango dancer is to move to the music and share what he is feeling with his partner, communicating the rhythm and melodie through the embrace.
This project is dedicated to teaching Traditional Argentine tango as it is danced in the Milongas of Buenos Aires - Argentina."