Casdon
This is about Scotland growstuff, so the English system is not relevant. The Government website says that ‘DBS adult first is a service available to organisations who can request a check of the DBS adults' barred list. Depending on the result, a person can be permitted to start work, under supervision, with vulnerable adults before a DBS certificate has been obtained.’ So that wouldn’t be an issue.
Of course it’s far from ideal that the care system is so on its uppers that asking Local Authority staff to work in their holidays is necessary, but it’s optional, and I think the sympathies of all of us should lie with the staff who are in care services who must be working horrendously long hours with little support.
I admit I don't know how the system works in Scotland and, to be fair, there might have been changes in England over the last few years. However, part of my role some years ago was the administration of DBSs and I know that a teacher's DBS wouldn't cover any other role. The "barred list" is something else. Apart from that, teachers aren't trained to work with vulnerable adults.