Science, technology, engineering and mathematics (STEM) do not form a single industry. They are more a collection of subject areas that are in demand by many different industries and companies, across London and beyond.

London is one of the world’s most important financial services centres. Financial services include everything from traditional high street banks to re-insurers.

London is a world centre for scientific research. It is by far the leading research centre in Britain. Many people working in scientific research do so as part of an academic institution, like a university.

The telephone network is a very large and complicated system that spans most of the world. The recent growth of technology (in particular mobile phones, the Internet and broadband) has had an impact on the way we communicate with each other.