cytech is expensive for the course. the assesment days are much cheaper, about £160ish for level 2, but harder to get onto.
no you couldn't teach it. one of their trainers is THE biggest bike geek i have ever met! do you know the minimum handle bar width required to meet cen regs? or the spoke tension ranges for a asymmetric dished wheel for a known erd and flange diameter withouth googling
cytech is more about good workshop practices than ability.
oh and no halfords will not pay for cyctech training anymore.