We recently got staff to sign off fit and proper forms. A few raised concerns that they didn't consider they'd had formal training on certain subjects. We'll have had informal chats, but no official training. Perhaps we need to look at a bunch of online courses staff do on day 1, and periodically there after.
I'm sure there must be some cheap and cheerful providers of online courses you work through to metaphorically tick the box, but a Google search didn't prove too useful. Maybe I'm searching the wrong terms. Any suggestions?