The group had originally planned on recording a double album, with one album consisting of more ambient and mellow songs and the other traditional dance music tracks. However, the group decided on releasing Scars on its own, with Zephyr as its follow-up.
Zephyr was released on 7 December 2009 by record label XL. Initially, the album was only released as a digital download, but a physical release (CD) followed in March 2010.
Allmusic called the album an "altogether more reflective affair [than Scars] that allows Buxton and Ratcliffe to showcase their unique interpretation of a chillout album", though criticising the album's short length.