Trainer of "Train the Trainer"

[blue up]

Is there a UK CAA requirement for any sort of formal qualification to become a Trainer of "Train the Trainer" courses? I'm trying to see if years of CRM/TKI/Sim instruction is what I need to start writing and running TtT courses.

The difficulty I have is that Google can't differentiate between various similarly named courses that appear outside of Aviation.

Confused!

Thanks