Being a university student, I am on the update service. Which means I provided nurse plus with my ID code and they had direct access to my DBS, however, in general, they take about 3 weeks minimum to come back.
A week and people in the office let you know straight and for more paper work if they need it.
Can take up to 60 working days time line set by the DBS not nurse plus.
Normally if your DBS is clear a few days
Approx 3 weeks