The whole DBS varies on where a scholars service operates (I'm talking precovid here). When I was on a Nexus scholars contract a few years back all I needed was a DBS check which I needed when starting with GNE. However I know drive a County Durham scholars (the 4274) and for that I need an enhanced DBS check and also complete the Durham Council Safeguarding Course/Lecture. I then have a badge which I need to wear at all times and needs to be renewed every 3 years.

Yet when I was at Arriva, I didn't even have a DBS check when I started. I'm not sure if there is a cost associated with the DBS itself so maybe that's why Arriva don't do them but there's alot of paperwork and admin involved (especially if every driver gets done).