Cathy was a Consultant in Pain Medicine for 23 years and is now works for NHS Gloucestershire CCG. She writes and lectures widely on aspects of pain management, evidence, and opioid therapy in particular and the implications for public health. Cathy contributes to the work of PHE, MHRA, ACMD, the European Medicines Agency, and the Cochrane collaboration. She is a member of the IASP International Taskforce on Opioids and for the WHO Guideline on Cancer Pain Management. She is Clinical Lead for the NICE Guideline on Chronic Pain and topic advisor for the NICE Guideline on Safe Prescribing and Withdrawal Management of Medicines Associated with Dependence. She provides in-reach pain services to five prisons in the South West of England and frequently contributes to conversations about pain, opioids and painkiller addiction in both written and broadcast media.