Welcome Bob, I used to be an instructor back in the 80's and 90's (till my bikes got stolen) looks like times have moved on since then. We used to have a Cardington bod turn up and continually assess all the instructors to maintain the standard of peeps who were approved for issueing CBT certificates (DL196 if I'm not mistaken). I guess with the changes that followed including DAS things are a lot more difficult now though.