Mr. Marshall was educated at the University of the West Indies and the Hugh Wooding Law School. He is a member of the Barbados Bar and is also admitted to practice in other Caribbean jurisdictions.
Mr. Marshall served as Chairman of the Committee of Experts on Electronic Commerce of the Free Trade Areas of the Americas (FTAA). That Committee is one of the three consultative committees agreed upon in 1994 by the Trade Ministers of the 34 countries of the Western Hemisphere, at their FTAA Costa Rica Summit. The Committee has as its broad purpose, analyzing and making recommendations on all of the electronic commerce issues as they will impact on the establishment of the FTAA.
Mr. Marshall has done numerous presentations on Electronic Commerce and Barbados' International Financial Services Sector in major cities in the Caribbean, United States, Latin America, Canada and the United Kingdom. A number of his articles and presentations have been adopted by universities as recommended reading. Between 1994 and 1997, he served as Chairman of the Board of the National Housing Corporation, a Statutory Corporation in Barbados which is responsible for the acquisition and management of government lands and the provision of housing.
During the period 1997-1999, he also served as Chairman of the Urban Development Commission, a Statutory Corporation responsible for the development of urban areas on the island. In June 1999, he was appointed Chairman of the Barbados Tourism Authority, a position he relinquished in April 2000.
Mr. Marshall was appointed to the Barbados Senate in January 1999 and served as a Senator in the Upper House of Parliament until April 2003 when he was elected to Parliament as the Representative for the constituency of St. Joseph. That same year he was appointed Minister of Industry and International Business, a position he held until February 2006 when he was appointed Attorney General.
He was appointed to Queen's Counsel in 2006. From his student days at Combermere, Mr. Marshall an active member of Kiwanis International served his home club, becoming the first Barbadian Key Club Lt. Governor, Eastern Canada and the Caribbean District. He also served as President of the Kiwanis Club of Bridgetown for the year 1994-1995, during which time he received the designation of Distinguished President for his term in office.
Mr. Marshall worked with George Walton Payne & Co. from June 1984 while still a law student at the UWI, Cave Hill and his association with the firm continued after he was admitted to practice at the Bar in October of 1989, serving as managing Partner from 1994-2000.