CSC SIGNS MULTI-YEAR IT OUTSOURCING CONTRACT WITH NETWORK RAIL IN UNITED KINGDOM

News Release -- August 14, 2007

EL SEGUNDO, Calif., Aug. 14 -- Computer Sciences Corporation (NYSE: CSC) today announced that it has signed an information technology (IT) services contract with Network Rail, owner and operator of the UK’s railway infrastructure. The agreement, which has a five-year base period and one three-year option, coincides with a significant infrastructure investment by Network Rail essential to providing the UK with a safe, reliable and efficient railway.

Under the terms of the contract, CSC will provide midrange services and Oracle ERP support. The midrange work includes server maintenance and management, data center hosting, security, disaster recovery planning and storage area network management. Approximately 70 members of Network Rail’s current IT support team will transition across to CSC, including employees from previous contract incumbents.

“We are delighted to be working with Network Rail,” said Nick Wilson, president of CSC’s European Northern Region Operations. “This win builds on our track record in the public sector and our significant global presence in the transport industry. CSC’s critical infrastructure expertise will help deliver improved results to Network Rail in support of their journey to become a world-class organization.”

“This is a key contract award for both organizations and was arrived at following exhaustive evaluations by my team in NR and, from CSC’s point of view, in the face of fierce, high quality competition,” said Catherine Doran, director of Information Management at Network Rail. “We are eager to exploit CSC’s capabilities and look forward to a lasting relationship based on trust, mutual strategic understanding and sound operational delivery of services to our customers. We have always been clear that our preferred supplier in this area must engage in our NR development and change program as well as keep the critical systems running.”

About Network Rail

Network Rail is the “not for dividend” owner and operator of Britain’s railway infrastructure, which includes the tracks, signals, tunnels, bridges, viaducts, level crossings and stations – the largest of which we also manage.

We aim to provide a safe, reliable and efficient rail infrastructure for freight and passenger trains to use.

Website: http://www.networkrail.co.uk.

About CSC

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 87,000 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 $14.9 billion for the 12 months ended March 30, 2007. For more information, visit the company’s Web site at www.csc.com.