Roger Newenham is a highly experienced chemical engineer and independent expert witness with over 44 years in the downstream oil and petrochemical industries. A Chartered Engineer and Cambridge graduate, he has held senior roles in BP, SABIC and leading international consultancies before focusing on expert advisory work. Roger regularly acts as a technical, commercial and market expert in High Court litigation and international arbitration, including high-value disputes involving refinery performance, gas processing projects and petrochemical complexes. He has extensive experience providing independent engineer and technical advisor services to project sponsors, lenders and investors worldwide. He is recognised for delivering clear, balanced and technically rigorous expert evidence in complex, multi-billion-dollar disputes.