20 January Day in the life A Day in the Life of an Emergency Medicine Expert Witness 10. Report Writing, 07. Working with Instructing Parties, 14. Giving Oral Evidence, Accident and Emergency Colin Holburn is an EWI fellow, governor and founding member. A consultant in accident and emergency medicine, he has been practising as an Expert Witness for over 30 years. He tells us why he still loves Expert work and shares his advice for those interested in getting into the field.