DBS Delays

Hi,

I have been given a conditional offer to study Physiotherapy at Plymouth University, and frustratingly the only thing I'm awaiting is my DBS to come back.
The University have stated that a conditional offer cannot be made until the DBS is complete?

I contacted DBS and they said it has been at Stage 4 (police checks) for 4 weeks now. 5 weeks in total and may take up to 8 weeks but could be longer. More frustratingly, many other uni applicants I know have had there's back within two weeks.

Does anyone know what level of DBS is carried out for healthcare professions?
Has anybody else had to wait this long?
Has anybody got any advice?

I'm genuinely concerned I will not be offered a place at University, and I cannot submit my employment notice until I can guarantee I will be off to University.

Can anyone help, sorry for the essay.

A panicking mature student.