I work at a private 'sixth form college' in London - what used to be called a 'crammer' - teaching A Levels and GCSEs. Teachers can work from four to forty hours per week in the classoom, the pay scales are byzantine and there is no sick pay, no pension scheme, and no staff association at all. I want to join a union (and encourage others to join) but don't know which one would be most appropriate for our peculiar circumstances. Which, if any of them, would know or care anything about colleges like mine? Please help!