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.

Programs in communicable diseases help students research how to prevent the spread of these illnesses. Students look at how these diseases began, methods to stop the spreading and what to do in the event of an outbreak.

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 certificate is proof of qualification of a certain set of skills. Students who obtain a certificate have completed educational requirements and tests. Through completion, they become ready to pursue a degree or diploma, or to head into the professional world in their field of expertise.