I'm part of the Student Recruitment team at Exeter. Each of our course pages link out to our comparison and equivalency information for many international qualifications. The idea is that you can check the listed requirements in terms of A-levels and then check your qualifications against these here https://www.exeter.ac.uk/study/international/entry/. Direct equivalencies are provide in some cases. If you do not find your qualification listed then you can contact the university directly to make an enquiry, Use the enquire online option.
Hope that gives you a starting point to understand how University of Exeter can consider international qualifications. Chris