JWT London is led by a leadership team of three and owned by Global president Gustavo Martinez. It has a large creative team and major clients like Rolex, HSBC, Lego, and Nestle. The document then provides details on JWT's network size and competitors in the advertising industry. It proceeds to analyze a 2010 JWT London campaign for Kit Kat around the longest tennis match ever, discussing how it created a connection with the tennis fan audience at Wimbledon.