In 2007 in Birmingham, Riccardo Ferrando, Sarah Horswell, Claude Henry, Brian Johnson, Peter Lievens and the late Roy Johnston, organised a first Faraday Discussions on the topic of nanoparticles made of multiple metals, setting the stage for what would then become known as "nanoalloys". A second edition of these discussions, held in London in 2022, shows how significantly the field of nanoalloys has evolved in fifteen years.