May I suggest you check out Global Air Training based in Cheshire, UK @
Crew Resource Management, Team Resource Management, Safety, Security Training
I did my course with them and gained my accreditation a few months after. The course is short, compact and to the point.
Whilst they may be UK based they give seminars all around the world and have people from all around the world attending their courses.
If you want any more info PM me.
Regards
Anony