Lost Witness is the English trance producer and DJ Simon Paul (also known as Si Paul), working in collaboration with songwriter Edward Barton, writer of the 1983 Jane & Barton single, "It's a Fine Day" (later covered by Opus III in 1992),[1][2][3] and vocalist Danielle Alexander.
He also recorded under the aliases Dusk Til Dawn and The Eden Project.
A number of their singles co-written and produced by Simon Kemper were released on major electronic dance label Ministry of Sound.
In 2010, Lost Witness re-released the 1999 single "Red Sun Rising" (with vocals from Andrea Britton).
In June 2013, they collaborated with Sugababe and former Eurovision entrant Jade Ewen to release the track "Fly".