Blocklisting Interim Review

Genus PLC 02 February 2007 BLOCKLISTING SIX MONTHLY RETURN Information provided on this form must be typed or printed electronically. To: The FSA Date: 2nd February 2007 1. Name of applicant: Genus plc 2. Name of scheme Genus plc 2004 Executive Share Option Plan 3. Period of return: 26th July 2006 to 25th January 2007 4. Balance under scheme from previous return: 550,800 (first return) 5. The amount by which the block scheme has been increased, if the scheme has been increased since the date of the last return Nil 6. Number of securities issued/allotted under scheme during period: Nil 7 Balance under scheme not yet issued/allotted at end of period 550,800 8. Number and class of securities originally listed and the date of admission 550,800 Ordinary Shares of 10p each - 26th July 2006 9. Total number of securities in issue at the end of the period 55,844,730 Name of contact Ian Farrelly Address of contact Belvedere House Basing View Basingstoke Hampshire RG21 4HG Telephone number of contact 01256 345996 Signed by Ian Farrelly Company Secretary, for and on behalf of Name of applicant Genus plc If you knowingly or recklessly give false or misleading information you may be liable to prosecution. BLOCKLISTING SIX MONTHLY RETURN Information provided on this form must be typed or printed electronically. To: The FSA Date: 2nd February 2007 1. Name of applicant: Genus plc 2. Name of scheme Genus plc 2004 Performance Share Plan 3. Period of return: 26th July 2006 to 25th January 2007 4. Balance under scheme from previous return: 509,920 (first return) 5. The amount by which the block scheme has been increased, if the scheme has been increased since the date of the last return Nil 6. Number of securities issued/allotted under scheme during period: 509,920 to Employee Benefit Trust 7 Balance under scheme not yet issued/allotted at end of period Nil 8. Number and class of securities originally listed and the date of admission 509,920 Ordinary Shares of 10p each - 26th July 2006 9. Total number of securities in issue at the end of the period 55,844,730 Name of contact Ian Farrelly Address of contact Belvedere House Basing View Basingstoke Hampshire RG21 4HG Telephone number of contact 01256 345996 Signed by Ian Farrelly Company Secretary, for and on behalf of Name of applicant Genus plc If you knowingly or recklessly give false or misleading information you may be liable to prosecution. This information is provided by RNS The company news service from the London Stock Exchange

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Genus (GNS)
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