Chorion PLC 27 September 2005 Chorion plc ("Chorion" or the "Company") Holding in Company The Company was informed on 26 September 2005 by Artemis Investment Management Limited that it and certain of its subsidiary companies have an interest in 1,841,697 ordinary shares of 30 pence each in Chorion ("Ordinary Shares"), representing approximately 7.23 per cent. of the Company's issued ordinary share capital. These holdings are registered as follows: Registered Holder No. of Ordinary % Issued Share ------------------- Shares Capital ------------------------- ------------------------ Artemis UK Smaller Companies Fund 1,841,697 7.23% -------------- -------------- Total 1,841,697 7.23% ============== ============== 27 September 2005 This information is provided by RNS The company news service from the London Stock Exchange