Hi,
According to the web page information of the University, there shouldn’t be any reason why you wouldn’t be able to complete your Masters degree in International Relations and Diplomacy.
For further information please check this link if you haven’t yet: https://www.birmingham.ac.uk/postgraduate/courses/taught/govsoc/international-relations.aspx#CourseDetailsTab
I have a Bachelors degree in Political Science and during my undergraduate I really enjoyed the core module International Relations due to the fact that it was more focused on “today’s issues”.
I decided the University of Birmingham because I really find it useful to have a huge variety of course which you can take once you’re enrolled at the University as well as the ranking and research capacity, these all convinced me to apply at the University or Birmingham and not elsewhere.
Now I am doing my PhD here as well and I definitely don’t regret being part of the many University of Birmingham students.
I hope my response helped you. Get in touch if further information is needed.
All the best.