Before moving to New Zealand, Warnock practiced as a barrister in England and Wales.[1]
Warnock moved to the University of Otago as a lecturer in 2006[1] and was appointed associate professor, effective 1 February 2016.[2] She was promoted to full professor with effect from 1 February 2019.[3]
Warnock was awarded the 2013 international Research Fellowship by the New Zealand Law Foundation.[4]
Warnock, Ceri (2020), Environmental courts and tribunals : powers, integrity, and the search for legitimacy, Hart Publishing, an imprint of Bloomsbury Publishing, ISBN978-1-5099-4008-0