Londonbased
London-based is a compound adjective used to indicate that a person, organization, event, or activity is based in London, the capital of the United Kingdom, or operates primarily from London. The term is common in journalism, business, and cultural writing as a concise locator for location and base of operations. When used before a noun, it is typically hyphenated: a London-based startup, a London-based publisher. Some style guides permit London based without a hyphen, especially after the noun or in longer phrases, but hyphenation before a noun is the prevailing form in many publications.
Applications of the label span multiple sectors. In business and technology, London-based firms are described to
Notes on usage and scope: London-based does not denote nationality or origin by itself. It should be