Clarion Events | 54,825 followers on LinkedIn. Clarion is one of the world’s leading events organisers, we produce and deliver innovative and market-leading events. | Clarion Events is the world's largest privately owned event and exhibition organiser, known for our innovative approach, market-leading super brands and digital products. Founded in 1947, we have expanded to become a truly international organisation with offices in 12 countries. With a portfolio of 125 events and media brands across various vertical markets, we employ around 2,000 people worldwide.