British undergraduate degree classification
In the United Kingdom, medicine is usually taught as an undergraduate course, with graduates being awarded a master's level qualification: normally the conjoined degrees of Bachelor of Medicine, Bachelor of Surgery (MBBS, BM BCh, MB ChB, etc.) although at Queen's University Belfast (and universities in Ireland) Bachelor in the Art of Obstetrics (BAO) is added, and at some universities only the Bachelor of Medicine is awarded - all of these have equal standing. Unlike most undergraduate degrees, the MBBS is not normally considered an honours degree, and thus is not classified into first class honours, etc. Students may be awarded "Merits" and "Distinctions" for parts of the course or the whole course (depending on the institution) and "Honours" may be awarded at some institutions for exceptional performance throughout the course (as a grade above Distinction).
Bachelor's degree
In countries following British tradition, (the University of Malta is an exception) medical students pursue an undergraduate medical education and receive bachelor's degrees in medicine and surgery (MBBChir, MBBS, BMBS, BM, MBChB, etc.).
This was historically taken at the universities of Oxford, Cambridge, and Dublin after the initial BA degree, and in Oxford, Cambridge, and Dublin the BA is still awarded for the initial three years of medical study, with the BMBCh, MBBChir, or MBBChBAO, respectively, being awarded for the subsequent clinical stage of training. Some British universities give a bachelor's degree in science, or medical science, midway through the medical course, and most allow students to intercalate a year of more specialized study for an intercalated Bachelor of Science (BSc), Bachelor of Medical Science (BMedSc), or Bachelor of Medical Biology (BMedBiol) degree with honors.
Although notionally MB and BS are two degrees, they must be taken together. In some Irish universities, a third degree, Bachelor of Arts in Obstetrics (BAO), is added. However, this third degree is an anachronism from the 19th century and is not registerable with the Irish Medical Council. In the UK, these qualifications, while retaining the title of bachelor's degrees, are master's degree level qualifications.