http://www.mltuk.org/docs/CWSA.htm
MLTUK is running a consultation on the proposed Climbing Wall Supervisor's Award, which as you may have guessed, is a wall-specific qualification for people leading groups at walls.
They have a comment form that you may like to fill in, if you care enough about these things.
I'm sure that some of you have some views on the subject that you'd like to share. Before you do, please read the MLTUK's website.
Incidentally, there's nothing like this currently available. The SPA covers climbing walls briefly, but focuses much more on the technical skills necessary to run sessions outdoors. The only qualification that covers leading is the MIA. All the gaps are currently filled by site-specific training.
Any comments?