25 July Day in the life A Day in the Life of a Forensic Engineering Expert 10. Report Writing, 01. Starting your Expert Witness Business, 11. Responding to questions, 14. Giving Oral Evidence, Tom Magner, Forensic engineering expert Tom Magner provides independent technical assistance as an Expert Witness. Specialising in the forensic investigation of mechanical, electrical, and chemical incidents, Tom has carved out a niche working on holiday and travel claims in civil cases and, on occasion, fatal incidents in foreign criminal courts. He gives us an insight into his varied career; explains why he now speaks native-level Spanish; and shares his tips for going to court.