EL SEGUNDO, Calif., June 30, 2004 – Computer Sciences Corporation (NYSE: CSC) today announced that Insurance Corporation of Hannover (ICH), a wholly-owned subsidiary of Clarendon Insurance Group Inc. (CIGI), a Hannover Re company, has chosen CSC and Virtual In Processing (VIP) Services, another CIGI subsidiary, to provide back-office business process outsourcing (BPO) services. Under the six-year agreement, CSC and VIP will provide complete point-of-service and information technology (IT) support for four of ICH's niche market insurance programs and as-needed support, including statistical and regulatory reporting, for 16 other ICH programs.

CSC is already in the second year of a separate six-year BPO contract with CIGI, which is the leader in insurance program business within the United States, supporting CIGI’s New York non-standard automobile insurance business. Under the new outsourcing contract, CSC and VIP will support cover ICH’s program business, providing policy administration, bureau and management reporting, infrastructure support and agency bill processing.

CSC will process ICH’s business using CSC’s POINT IN, a comprehensive insurance processing suite designed for start-up to medium-sized insurance companies and managing general agents. CSC will also use its iSolutions suite of browser-based applications to automate access to processing and program information. This will allow ICH agents to access a company Web site in real time to rate, quote and issue new policies.

“ICH needed a flexible system to provide timely and accurate data,” said Linda Philipps, chief operating officer of VIP Services. “This new BPO agreement should help to reduce ICH’s costs, inaccuracies and headaches so that CIGI can meet its return on equity objectives.”

“We’re confident CSC and VIP together can process ICH’s large, existing line of business transactions efficiently, improve its processes and satisfy its customers today and tomorrow,” said Ray August, president of the P&C Insurance division of CSC's Financial Services Group. “CSC’s established relationship with VIP proves that we can deliver software and services focused on Clarendon’s business objectives and tailored to VIP’s processing needs.”

About Insurance Corporation of Hannover and Clarendon Insurance Group

Virtual In Processing Services and the Insurance Corporation of Hannover are divisions of Clarendon Insurance Group Inc. (CIGI), a U.S.-based property and casualty insurance group of companies. CIGI is a subsidiary of Hannover Re, the world’s fifth-largest reinsurer. ICH underwrites Program Business produced by retail and general agents who specialize in specific industry segments. While outsourcing many of the traditional insurance company transactional functions, the Company utilizes a highly disciplined underwriting protocol. The Company’s objective is to produce above average profits by leveraging the specialization of its agents and the skill sets of its underwriting staff.

CIGI comprises six property and casualty companies and is widely recognized as a leader in program business in the United States. Clarendon’s management and underwriting personnel have been writing program business for more than 10 years, providing experience and continuity that has made the firm an attractive option for general agents, reinsurers and brokers. For more information, visit the company’s Web site at www.clarendon-ins.com.

About CSC

Founded in 1959, Computer Sciences Corporation is a leading global IT services company. CSC’s mission is to provide customers in industry and government with solutions crafted to meet their specific challenges and enable them to profit from the advanced use of technology.

With approximately 90,000 employees, CSC provides innovative solutions for customers around the world by applying leading technologies and CSC’s own advanced capabilities. These include systems design and integration; IT and business process outsourcing; applications software development; Web and application hosting; and management consulting. Headquartered in El Segundo, Calif., CSC reported revenue of $14.8 billion for the 12 months ended April 2, 2004. For more information, visit the company’s Web site at www.csc.com.