I think there are quite a few optios around. I have no idea but thouught the BIPTD was general traning and offererd a range of different levels.
Here is one option to study local to me, there will be a few centres like this dotted around.
http://www.iabtc.co.uk/IABTC/correspondence-courses.htm#IABTC%20Advanced%20Clicker%20&%20Target%20TrainingSome colleges run courses with the differing levels of animal care related qualifications.
Most trainers don't have official qualifications ( but fair enough as most trainers instruct voluntarily and they tend to have wide ranging experience before becomming involved ) but even so any training and qualifications would be an advantage. If anyone wants to step in and replace me I wouldn't complain. lol. Funny how one ends up doing things simply because no one else will. lol.