Undergraduate degree
In the United Kingdom, a bachelor's degree is the most common type of "undergraduate degree". Some master's degrees can be undertaken immediately after finishing secondary education; however, these courses are usually extended versions of bachelor's degree programs, taking an additional year to complete. Most bachelor's degrees take three years to complete, with some notable exceptions, such as Medicine taking five years. Often students can initially enroll in a 4-year program then leave after three years and be awarded a bachelor's degree.
British degree abbreviations
Conversely, some bachelor's degrees in the "higher faculties" at the older universities in the UK (e.g. those other than arts at Oxford and Cambridge) are postgraduate qualifications (e.g. the BCL and BMus at Oxford). Many have been changed to the corresponding master's degree (e.g. BSc is now MSc at Oxford), but only within the last generation. The BD (Bachelor of Divinity) remains a higher degree at some universities (e.g. Oxford, Cambridge, St Andrews and, until recently, Durham) but is an undergraduate degree at most (e.g. London, Edinburgh, Aberdeen and Glasgow).