Hi, I have used Osteopaths for Industry (aka Health Response UK) for my manual handling instructor/assessor training for over 10 years (refreshing every 3 years). They are very good and quite competitive price wise (I also used to do people handling as well and used other providors so have seen some of the competion). They run courses in London & Esher. I don't think they (or any other provider) does just an assessors course I think they are all trainer/assessor courses. Regards Stephen