This London firm helps companies such as banks and wealth managers to reach 100m business news readers each month. Its platform lets clients define their target audience using criteria such as demographics and location. It then places their ads on financial news websites, including Marketwatch, Reuters and CNN Money. Cabell de Marcellus, 48, Raphael Queisser, 43, and Rupert Hodson, 45, started the firm in 2003. Offices in Sydney and New York helped Dianomi to more than double its sales to £8.7m last year. It is planning to open an outpost in Germany.