SUBSCRIBE for more speakers ► is.gd/OxfordUnion Oxford Union on Facebook: www.facebook.com/theoxfordunion Oxford Union on Twitter: @OxfordUnion Website: www.oxford-union.org/ A Canadian businesswoman, Greene is the first woman, and first non-Briton, to run Royal Mail. In 2013, she paved the way for the government to float the company, which now sees annual revenues of £9bn on the London Stock Exchange. She was named the Financial Times' Person of the Year in 2014. ABOUT THE OXFORD UNION SOCIETY: The Oxford Union is the world's most prestigious debating society, with an unparalleled reputation for bringing international guests and speakers to Oxford. Since 1823, the Union has been promoting debate and discussion not just in Oxford University, but across the globe.