Client Liaison was formed in Melbourne in 2009 by former Geelong Grammar schoolmates Monte Morgan and Harvey Miller.
Influenced by late '80s and early '90s electronic and house music, the pair produces a style of music described by them as "faux-fi", and incorporate a similar 1980s Australia theme into their personas. As part of this image, the pair draw a wide range of Australian references into their performances and music videos, and often make reference to brands such as Ansett, Foster's, Diners Club and have named Tina Arena and John Farnham as being amongst the many influences on their music.
In mid-2012, Client Liaison released the music video for "End of the Earth", a song Morgan had written five years prior during a time when he was "angry with Australia" and its culture cringe. The video, featuring the pair in '80s pop clothing performing in front of a montage of iconic Australian clips, became a cult hit on YouTube.
It wasn't until over a year later on 29 August 2014 that the duo released their first EP, eponymously titled Client Liaison.
Client Liaison's first studio album Diplomatic Immunity was released on 4 November 2016. The pair described the theme of the album as being of them as "diplomats flying the Australian flag, taking Australia to the world".
The duo collaborated with Cleopold, Flight Facilities, and Tina Arena while producing the album. The music video for "Wild Life", the album's second single, makes references to Qintex, the former company run by businessman turned fugitive Christopher Skase. The album's fourth single, "A Foreign Affair", features Tina Arena and makes reference to her 1995 song Sorrento Moon. As part of the release of the album, Client Liaison announced that in place of ordinary band merchandise they would be releasing a line of clothing named the "Client Liaison: Designer Range" with the assistance of stylist Kirsty Barros.
The pair performed at Firefly Music Festival, Splendor in the Grass, and Secret Garden Festival in 2015, Groovin' the Moo and The Falls Music and Arts Festival in 2016, and Field Day in 2017.
The band commenced a world tour titled "A Foreign Affair" in August 2017.