If you are a current matriculated student, you can login to CareerConnect, and under
the Resource Library, you can find updated information in the UK Visa Information.
The International Student
Advisory Service, University of Oxford, also gives a presentation a couple
of times per academic year at the School, regarding visas if you plan to stay in
the UK after your course.
If you have recently become an alumnus, you can login to CareerConnect (CC) with
your newly provided CC username and password, and follow the above path to find UK
Visa information.