Oriel Securities Ltd. was a corporate and institutional stockbroking and advisory firm focused on providing M&A advisory and financial restructuring services to companies from healthcare services, life science, oil/gas exploration, real estate, and retail sectors. Oriel Securities was established in 2002 and was based in London. In 2014, Oriel Securities was acquired by Stifel and consolidated all of its London-based businesses under Stifel Nicolaus Europe Limited.