London, UK —8th May, 2003 — OneSource Information Services Limited a leading provider of business information solutions, today announced that Sage Enterprise, a leading provider of integrated business management software and services, has adopted OneSource® Business BrowserSM products to improve the targeting of its marketing campaigns. As a result, Sage expects to make considerable savings on the cost of every marketing campaign by eliminating list purchase and reducing data cleansing costs. In addition, Sage is improving marketing effectiveness by using the OneSource Web-based information source to access comprehensive company profiles and market analyses, to identify key decision makers faster, and to make quicker decisions regarding product offerings.

“OneSource has exceeded our expectations”, James Melville, Business Analyst at Sage Enterprise Solutions concluded. “We’ve saved money and achieved a more professional approach to our marketing campaigns so that we can more easily achieve ROI targets and ultimately help our resellers bring in more business.”

Sage''s Line500 integrated business management system is sold through a network of Value Added Resellers as well as direct to large organisations. Fast access to accurate and relevant customer data is therefore essential for the company to make strategic business decisions and plan joint marketing campaigns with resellers.

"Our VARs provide us with basic customer information, but we require more detailed data so that we can target our campaigns more precisely -- according to vertical sector or even region – and in turn generate higher-quality leads for resellers as well as our own sales teams,” commented James Melville.

"With OneSource products, we can profile prospects based on company size and vertical sector, and we can identify the names of individual targets, including the Financial Director and IT/IS Manager," continued Melville. "The fact that OneSource provides the names of senior directors, as well as the key decision makers, is a major advantage that helps when reselling our larger, mid-range systems like the Line500."

"Moreover, because we access comprehensive information on a company and its markets, we are able to make quicker decisions on each prospect’s potential value and which Sage product best fits their business. This improves the targeting of every marketing campaign and provides our own sales teams with the information they need to make a sale.”

Stuart Small, Vice President of European Sales for OneSource, commented, "Access to accurate and relevant external business information improves the effectiveness of sales and marketing campaigns by helping companies like Sage be more responsive to customers. Professionals with accurate and timely knowledge of their customers develop closer and longer customer relationships, ultimately leading to improved bottom line results."

About Sage Enterprise Solutions
Sage (UK) Ltd is a subsidiary of The Sage Group plc, a leading international supplier of business management solutions. The company''s integrated enterprise management solutions enable small and medium-sized businesses to automate their business processes and transactions. Since the company acquired Tetra in March 1999, Sage''s solutions can be also utilised by larger enterprises. Over 3 million companies worldwide trust their critical business processes to Sage. Its solutions are sold through an extensive network of Value Added Resellers, accountants and software developers.

For further information contact: Suzy Moulding at the Sage Press office on: 0191 255 3000 or email suzy.goulding@sage.com

About OneSource Information Services, Inc.
OneSource, a recognised leader in business information solutions, delivers unparalleled company, executive, and industry intelligence that make business professionals more effective and productive in completing their critical daily tasks. The OneSource products and services support a company''s vital business processes including serving their customers, finding and leveraging new opportunities, and managing suppliers and partners.

OneSource combines and organises content from over 2,500 information sources supplied by more than 30 world-class content providers, which creates an unequalled information resource encompassing corporate families, industries, executives, financials, news, analyst reports, and trade and business press articles. Using our Global Business TaxonomyTMsystem, OneSource links this in-depth information on over 1.7 million companies worldwide resulting in the most extensive company-linked repository of business information in the world.

Users of OneSource products work faster, smarter, and more productively, whether leveraging OneSource business information through the Web-based OneSource Business Browser product or through enterprise applications or portals integrated seamlessly via the OneSource AppLinkSM software development kit.

OneSource is headquartered in Concord, Massachusetts in the United States, with offices located in North America, Europe, and the Pacific Rim. Product information is available at www.onesource.com. Customers include Akamai Technologies, American Express, Avaya Communications, Bank One, Chubb, Citibank, Cisco, Hewlett Packard, Deloitte & Touche, i2 Technologies, Orange, Rational Software, Royal & Sun Alliance, SAS Institute, Securicor, Sun Microsystems, and Williams Communications.

OneSource, Business Browser, Global Business Taxonomy, AppLink, and/or other OneSource product and service names referenced herein are either trademarks or service marks or registered trademarks or service marks of OneSource Information Services, Inc. or its subsidiaries in the United States and/or other countries. All other product and service names mentioned herein are trademarks or service marks of their respective owners.

This news release contains certain forward-looking statements that are based on the current beliefs and expectations of OneSource’s management, as well as assumptions made by, and information currently available to, OneSource’s management. Such statements include, but are not limited to, those regarding the functionality and effectiveness of the Business Browser product line. Because such statements involve risks and uncertainties, actual actions and strategies and the timing and expected results thereof may differ materially from those expressed or implied by such forward-looking statements, and OneSource’s future results, performance, and achievements may differ materially from those expressed in, or implied by, any such forward-looking statements. Such risks include, but are not limited to, OneSource’s reliance on generating revenues from its Web-based product line; political, economic, and business fluctuations in domestic and international markets; and competition in the business information products and services industry. In addition to the factors noted above, other risks, uncertainties, assumptions, and factors that may affect OneSource’s financial results are described in the company’s recent filings with the United States Securities and Exchange Commission, including OneSource’s Annual Report on Form 10-K for the fiscal year ended December 31, 2002.