July 1, 2008 Subject: Resignation of Director and Executive To: President of The Stock Exchange of Thailand Dear Sir, Esso (Thailand) Public Company Limited ("Esso") would like to inform that Mr. Yeo Kee Whye has resigned from the position of Director and Retail Manager, effective from July 1, 2008. Please be informed accordingly. Yours truly, ESSO (THAILAND) PUBLIC COMPANY LIMITED ....................................................................... (Mr. Daniel E. Lyons) Managing Director