and not funded/maintained in any way by "Cambridge"

Therein lies the inherent problem.

These useless places adopt very classically "English" sounding names to market themselves to rich asian parents who feel that it must have credibility because it is called cambridge or big ben or london or whatever. And yes I have heard of training centres called amongst other things in China, Big Ben English and Little London,when they have probably never even had a teacher from London set through the door, and have no educational or physical links to London....utterly disgraceful!!