UK starting electrical improvers role 4 years after completing level 3

[Alex field]

I’ve recently been offered a role as an electrical improver doing commercial and industrial work and I start in 2 weeks. The employer is aware that I’m going to be quite rusty as it’s been such a long time since I left college but I don’t want to go into this unprepared. I’ve been flicking through old course work but i was hoping someone could point me at some stuff that might be more important. Anyone have any advice on what I need to catch up on before I start?

Sorry if this is in the wrong thread I wasn’t too sure where to put it.