London is the capital of UK, the most populous region and where royal family lives. It has the largest concentration of higher education in Europe with 412 thousand students at 43 universities.

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom and Britain, is a sovereign state located off the northwestern coast of continental Europe. The two most famous (and oldest) universities are Oxford and Cambridge (often referred to as Oxbridge by many Britons). England also has several other world-class institutions, including several in London (notably Imperial College, the London School of Economics, University College London and King's College London, all are part of London University).

A Doctorate of Philosophy, or PhD, may require eight years or more to complete, as well as a dissertation. In most fields, the possession of a PhD qualifies the holder to become a professor of a chosen subject. There are many different programs available.