Born in London, to an Irish mother and a New Zealand father, and raised in Bellewstown, County Meath, Ireland. Sister of Irish rugby player Shane Horgan.
Her Emmy nomination for Catastrophe (2015) marked the first Emmy nomination for writing for a British comedy series in nine years.
Left Ireland in order to pursue an acting career in London. However, she ended up working at a job center for five years (and later returned for half a year), after being turned down by every major acting school in London.
Grew up on a turkey farm.
Spent five months away from her London-based home in order to work on "Divorce" (2016) in New York. She would FaceTime her daughter five times every day during her absence.
Created the series Pulling (2006), which she also starred in, after being dissatisfied with the roles available to her.
One of five children.
Described her own wedding as part of a "shotgun marriage", as they wed six months after they met and were already expecting their first child.
Worked in a Camden bong shop for years.
Made her television debut at the age of 18 on Jo Maxi (1989), when she appeared as a amateur back-up dancer to her friends' band.