Chorion PLC 09 May 2005 Chorion plc (the "Company") Holding in Company The Company was informed on 6 May 2005 by Kleinwort Benson Channel Islands on behalf of Orbis Trustees Guernsey (which act as trustees of the New Chorion Employee Share Ownership Trust) that it had purchased for the benefit of the directors of the Company 277,731 ordinary shares of 30 pence each in Chorion ("Ordinary Shares"), resulting in a holding of 610,811 shares, representing approximately 2.4 per cent. of the Company's issued ordinary share capital held as follows: Name No of Price (p) Consideration (£) % of Total % holding Ordinary issued holding following this Shares share following notification acquired capital this notification Orbis 333,080 1.31% Trustees Guernsey Limited T1129 ACCT K.B. 277,731 291p £808,197 1.09% 277,731 1.09% (C.I.) Nominees Limited Total 610,811 2.40% 9 May 2005 This information is provided by RNS The company news service from the London Stock Exchange