He was educated at the University of East Anglia.
Performing since 2009, Cahill has had the majority of his success in 2012. He has written and performed two podcasts for BBC Radio, 'Chick N Mix' and 'Doggy Dilemma' this year as well as performing on BBC Three's Chris Moyles' Comedy Empire. Cahill also took 'The Tim and Pat Show' to Edinburgh Festival Fringe in 2012. He returned to the fringe in 2013 with his show 'Start'.
Cahill received the Chortle Best Newcomer 2012 award and New Act of the Year (Hackney Empire Awards), he is also a Latitude New Act of Year Finalist and BBC Radio 2's BBC New Comedy Act of the Year Finalist.
- The Guardian "This Week's New Comedy" 28 January 2012
- Chortle "Chortle Page, Pat Cahill" 2012.
- London Is Funny "The Spotlight On....Pat Cahill" 24 May 2012
- BBC "Comedy Clips. Pat Cahill's Chick N Mix" 2012.
- BBC "BBC Comedy Empire, Pat Cahill"
- Ed Fringe What's On "What's On The Tim and Pat Show" Archived 2013-01-22 at Archive.today August 2012
- Spoonfed "Editor's Comedy Choice" Archived 2012-10-15 at the Wayback Machine 25 September 2012
- Patrick Kielty (2011). 2011 Final (BBC Radio 2). BBC Introducing Radio 4 Comedy Award. BBC Sounds.