Question: What is the previous name of British-based information and workflow experts RELX Group?

full_context: Document 1: Elsevier: Elsevier (] ) is an information and analytics company and one of the world's major providers of scientific, technical, and medical information. It was established in 1880 as a publishing company. It is a part of the RELX Group, known until 2015 as Reed Elsevier. Its products include journals such as "The Lancet" and "Cell", the ScienceDirect collection of electronic journals, the "Trends" and "Current Opinion" series of journals, the online citation database Scopus, and the ClinicalKey solution for clinicians. Elsevier's products and services include the entire academic research lifecycle, including software and data-management, instruction and assessment tools.
Document 2: GroupM: GroupM is the world’s largest advertising media company in terms of billings, also commonly known as "The Big One". It is headquartered in New York City with over 24,000 employees and 400 global offices in 81 countries. GroupM was formed in 2003 by WPP Group to serve as the parent company of WPP's media agencies including Maxus, MEC, MediaCom, Mindshare, QUISMA, Xaxis, Outrider, Catalyst, Quasar, IEG, Movent, Vocanic, Essence Digital Inc, and Plista. It handles over 32% of the world's media billings making it the world's largest media investment management operation. Kelly Clark is Global CEO of GroupM and manages the worldwide operations including the management of GroupM’s agencies worldwide. Irwin Gotlieb is Chairman of GroupM and focuses on the overall strategic direction of GroupM.
Document 3: Royal Bank of Scotland Group: The Royal Bank of Scotland Group plc (also known as RBS Group) is a British banking and insurance holding company, based in Edinburgh, Scotland. The group operates a wide variety of banking brands offering personal and business banking, private banking, insurance and corporate finance through its offices located in Europe, North America and Asia. In the UK, its main subsidiary companies are The Royal Bank of Scotland, NatWest, Ulster Bank and Coutts. The group issues banknotes in Scotland and Northern Ireland and, as of 2014, The Royal Bank of Scotland is the only bank in the UK to still print £1 notes.
Document 4: Reed Business Information: Reed Business Information is a provider of data services, analytics and information to businesses. The company has offices in many countries worldwide including the United Kingdom, United States of America, France, Singapore, China, Germany and Italy.  Reed Business Information is part of the Risk and Business Analytics market segment of RELX Group, and is often referred to as RBI.
Document 5: Thomson Reuters Messenger: Thomson Reuters Messenger (RM; formerly Reuters Messaging) is an instant messaging tool and real time collaboration service designed for financial professionals. Messenger was first released by Reuters in November 2002. On April 17, 2008 the Thomson Corporation and Reuters Group PLC combined to form Thomson Reuters. The most recent version of Messenger is Thomson Reuters Messenger 8.4 (released March 31, 2011.)
Document 6: RELX Group: RELX Group (pronounced "Rel-ex"; known as Reed Elsevier between 1992 and February 2015) is a multinational information and analytics company based in London, in the United Kingdom. It operates in four market segments: scientific, technical and medical; risk and business analytics; legal; and exhibitions.
Document 7: Erik Engstrom: Erik Nils Engstrom (born 14 June 1963) is a Swedish businessman, chief executive officer (CEO) of RELX Group, a multinational information and analytics company, operating in four market segments: scientific, technical and medical; risk and business information; legal; and exhibitions.
Document 8: London Stock Exchange: The London Stock Exchange (LSE) is a stock exchange located in the City of London, England. s of 2014 , the Exchange had a market capitalisation of US$6.06 trillion (short scale), making it the third-largest stock exchange in the world by this measurement (the largest in Europe, ahead of Euronext). The Exchange was founded in 1801 and its current premises are situated in Paternoster Square close to St Paul's Cathedral in the City of London. The Exchange is part of the London Stock Exchange Group.
Document 9: Expert Global Solutions: Founded in 2012, Expert Global Solutions, Inc., ("EGS", formerly NCO Group), based in Plano, Texas, is the world's largest privately owned Business Process Outsourcing company with more than 100 locations globally and more than 40,000 associates. It is a holding company for NCO and APAC Customer Services, Inc. (APAC), providers of global business process outsourcing services. NCO provides accounts receivable management (ARM) services, and APAC provides customer relationship management (CRM) services. EGS has over 100 locations, with more than 42,000 employees. EGS is owned by One Equity Partners (OEP), the private investment arm of JP Morgan Chase & Co.
Document 10: Vinexpo: Vinexpo is one of the largest exhibitions for wine and spirits professionals from all over the world, held in Bordeaux in uneven years. The first event dates back to year 1981 gathering 524 exhibitors from 21 countries 11,000 professional visitors from 50 countries. In 2015 it grew to 2,350 exhibitors (2,400 in 2013) from 42 countries. Current Vinexpo Chief Executive Officer is Guillaume Deglise who was appointed in September, 2013.
Document 11: Realex Payments: Realex Payments is a European payment service provider and a division of Global Payments Inc. with offices in Dublin and London. The company provides a broad range of payment gateway services and processes transactions in excess of €35 billion per annum on behalf of more than 14,000 clients including Virgin Atlantic Airways, Vodafone Ireland, the AA, AXA Insurance, Paddy Power and Aer Lingus.
Document 12: Reed Exhibitions: Reed Exhibitions is the world's first event organiser, with a portfolio of approximately 500 events in 40 countries including UK, Austria, USA, France, Germany, Brazil, Russia, India, China, Australia and the Middle East. Reed Exhibitions, which employs about 3,500 staff, is a division of RELX Group, a provider of professional information and workflow solutions in the science, legal, medical, risk management and business sectors. In 2011, Reed Elsevier made an adjusted profit before taxation of £1,391 million on turnover of £6,002 million.
Document 13: Pearson PLC: Pearson PLC is a British multinational publishing and education company headquartered in London. It was founded as a construction business in the 1840s. It shut down its construction activities in the 1920s and switched to publishing. It is the largest education company and the largest book publisher in the world. Pearson has a primary listing on the London Stock Exchange and is a constituent of the FTSE 100 Index. It has a secondary listing on the New York Stock Exchange in the form of American Depository Receipts.
Document 14: Ablex Publishing: Ablex Publishing Corporation is a privately held book publisher and academic journal publisher in New York City, New York, USA. It was previously located in Norwood, New Jersey, and also at one time in Westport and Stamford, Connecticut. Ablex publishes edited volumes, monographs, research journals, and textbooks, focused on communication, education, library science, psychology, and technology. In 1997, Ablex became an affiliate company of JAI Press, a subsidiary of Elsevier Science, the world's largest publisher of medical and scientific literature.
Document 15: Bertelsmann: Bertelsmann is a German multinational corporation based in Gütersloh, North Rhine-Westphalia, Germany. It is one of the world's largest mass media companies and also active in the service sector and education. Bertelsmann was founded as a publishing house by Carl Bertelsmann in 1835. After World War II, Bertelsmann, under the leadership of Reinhard Mohn, went from being a medium-sized enterprise to a major conglomerate, offering not only books but also television, radio, magazines and business services. Bertelsmann is an unlisted and capital market-oriented company, which remains primarily controlled by the Mohn family. Since 2016, major divisions of Bertelsmann are RTL Group, Penguin Random House, Gruner + Jahr, BMG, Arvato, Bertelsmann Printing Group, Bertelsmann Education Group and Bertelsmann Investments.
ground_truth: Reed Elsevier