Cerys started performing stand-up comedy at the age of 15, when Natalie Haynes ran a workshop at their school. They were social secretary of the KCL Comedy Society and wrote and performed sketches and stand-up throughout their undergrad degree.
In 2016, they joined Steve Cross' Talent Factory and began performing science themed stand-up comedy. They have performed at the Science Showoff (as well as Geek Showoff, History Showoff, and Books Showoff), Nerd Nite, the Variable's Presents, Dr Jigg's Bowson's Charming Science Friends, and a number of other science and/or geekery themed comedy nights.
They performed with the Agony Auncles of Science, a science themed improv night that promises to solve all your problems, at the Edinburgh Fringe 2017. The show received a 5 star review and made it into Wired's Top 10 Science Shows at the Fringe.