Nicolaas Douwma, better known by his stage name Sub Focus, is a Scottish English DJ, record producer, songwriter, musician and sound engineer. He has been releasing records since 2003. On 12 October 2009, he released his self-titled debut album. He released his second album, Torus, on 30 September 2013. Douwma's album in collaboration with Wilkinson titled Portals was released on 9 October 2020 through Casablanca Records. His fourth album, Evolve, was released on 12 May 2023.

Christopher William Mercer, known by stage name Rusko, is a British electronic music producer and DJ from York, England.