Katrina has been teaching Biology for over 20 years, most recently in King Edward VI School where she was employed as a Teaching and Learning Lead Practitioner. In this role, alongside teaching A level Biology and AS level Chemistry, she provided mentoring and support for trainee and newly qualified teachers. She is an A level examiner for three examination boards, including Edexcel IAL. She contributed to Edexcel IAL Biology and Chemistry A2 Textbooks written in 2018 and has additionally worked as a reviewer on the self-study materials written for Harrow School Online.
Katrina holds a joint honours degree in Biology and Geography from the University of Bristol and a PGCE in Biology and Games, also from the University of Bristol. She is a keen athlete and has represented Great Britain in triathlon, duathlon and aquathlon since 2012.