They are perhaps best known for their 1995 hit single "Insomnia"; it was voted by Mixmag readers as the fifth greatest dance record of all time in 2013,[1] was certified triple platinum by the British Phonographic Industry (BPI) in 2023, with sales of over 1.8million.

As of August 2024, Faithless have released seven studio albums: Reverence (1996), Sunday 8PM (1998), Outrospective (2001), No Roots (2004), To All New Arrivals (2006), The Dance (2010), and All Blessed, which was released in 2020.

An eighth Faithless studio album, titled Champion Sound, is due for release in autumn 2024; it was preceded by two singles: "Find A Way" and "I'm Not Alone (Rest Well Maxwell)".

In 2019, Faithless member Rollo Armstrong started a separate project under the alias R Plus, with some online streaming services erroneously listing Faithless as a collaborative artist on R Plus' releases.

Rollo's sister, Dido has collaborated frequently with the band, including 2002 hit "One Step Too Far", which charted in thirteen countries.