Get careers advice on your CV, covering letters, how to sell yourself and wear a nice suit. I presume most people don't understand what I did. I stress the equivalent skills I have to experience. I'm now bringing out things like I did work in a shared office, work with other students, academics, do collaborations=teamwork. Teaching=management.
I say that I managed a consummables budget=ordered lab equipment, booked conferences. I answered phone/talked to suppliers/photocopied/greeted visitors. There's project management from working independently setting deadlines yourself, planning work. There's problem-solving, initiative.
As it is business-based surely all the generic office agencies should be able to find something good? How are your IT skills, do you understand finance? These 2 areas will be better paid. You could get on a graduate training scheme e.g. in finance/managemnt which could be £20k.