A constituent college of the federal University of London, Birkbeck, University of London (formerly known as Birkbeck College, abbreviated BBK) is a public research university with a focus on evening higher education. It is located in London, United Kingdom. Although almost all of the teaching is done in the evenings, it offers various Master's and Bachelor's degree programs that can be pursued either full- or part-time. It also accepts part-time and full-time PhD candidates. In fields including English, Economics, Statistics, History, History of Art, Philosophy, Psychology, Spanish, and Science, its employees are well regarded for their research accomplishments. Additionally, it provides a wide variety of short courses, foundation degrees, certificates, and diplomas in continuing education. Four Nobel laureates and a former British prime minister are among Birkbeck's alumni and professors.