XL Capital Ltd Announces The Appointment Of Fiona Muldoon As Senior Vice President, Global Treasurer

New York, New York - September 16, 2008

Hamilton, Bermuda – September 16, 2008 - XL Capital Ltd (NYSE: XL) ("XL" or the "Company") announced today that it has appointed Fiona Muldoon as Senior Vice President, Global Treasurer.Ms. Muldoon previously served as Senior Vice President, Corporate Strategy, Development and Planning Officer for the Company. In her new role, she will report to XL's Chief Financial Officer, Brian Nocco.As Global Treasurer, Ms. Muldoon will oversee XL's Treasury operations, including global liquidity, funding, cash management, foreign exchange management, capital management, rating agency relationships and credit ratings management. She will continue to be responsible for XL's Corporate Development & Strategic Planning functions.Ms. Muldoon has held various progressively senior leadership positions since joining the XL Capital Group of companies in 1993, including Vice President and Controller of XL Europe Ltd, Chief Financial Officer and Secretary of XL Europe Ltd, Treasurer of European Operations, and Managing Director of XL's operations in Dublin. Ms. Muldoon relocated to Bermuda in 2003 in the role of Senior Vice President and Financial Planning Officer for XL Capital Ltd and she became Senior Vice President and Corporate Strategy, Development and Planning Officer in March 2007. Prior to joining XL, she held financial accounting and auditing roles with Chase Bank Ireland and Deloitte & Touche, respectively.Commenting on Ms. Muldoon's appointment, Mr. Nocco said: "XL is fortunate to have someone of Fiona's caliber as Global Treasurer. Her strong analytical and leadership skills along with her financial expertise have been invaluable to XL during the past 15 years. I look forward to working more closely with Fiona who will continue to be a tremendous asset to XL's senior finance management team."XL Capital Ltd, through its operating subsidiaries, is a leading provider of global insurance and reinsurance coverages to industrial, commercial and professional service firms, insurance companies and other enterprises on a worldwide basis. As of June 30, 2008, XL Capital Ltd had consolidated assets of approximately $52.1 billion and consolidated shareholders' equity of approximately $8.8 billion. More information about XL Capital Ltd is available at www.xlgroup.com.