Marmozets signed to Roadrunner Records in October 2013 and released their debut album on 29 September 2014.

[9] Both singles received high praise from BBC Radio 1 DJs Zane Lowe, Daniel P Carter and Huw Stephens.

In March 2015, it was announced that Marmozets would be supporting Muse on their 2015 UK Psycho Tour.

[15] Work on the band's second album was delayed when Becca McIntyre was hospitalised after being diagnosed with hypermobility syndrome.

[16] In January 2017, Sam Macintyre announced via Twitter that the band had completed their second album.

[20] In June 2022, Rebecca and Jack announced their marriage and that the band was working on new music.

[21] On July 5, 2024, the band announced via Instagram that they had just signed a new record deal with The Nettwerk Music Group and would "see you all soon.