Blocklisting Interim Review

Genus PLC 05 September 2007 BLOCKLISTING SIX MONTHLY RETURN Information provided on this form must be typed or printed electronically. To: The FSA Date: 5th September 2007 1. Name of applicant: Genus plc 2. Name of scheme Genus plc 1999 Executive Plan 3. Period of return: 6th March 2007 to 5th September 2007 4. Balance under scheme from previous return: 2,000 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: 2,000 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 91,800 Ordinary Shares of 10p each - 6th March 2006 9. Total number of securities in issue at the end of the period 55,961,538 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: 5th September 2007 1. Name of applicant: Genus plc 2. Name of scheme Genus plc 2000 Company Share Plan Part A 3. Period of return: 6th March 2007 to 5th September 2007 4. Balance under scheme from previous return: 24,058 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: 16,917 7 Balance under scheme not yet issued/allotted at end of period 7,141 8. Number and class of securities originally listed and the date of admission 34,807 Ordinary Shares of 10p each - 6th March 2006 9. Total number of securities in issue at the end of the period 55,961,538 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: 5th September 2007 1. Name of applicant: Genus plc 2. Name of scheme Genus plc 2000 Company Share Plan Part B 3. Period of return: 6th March 2007 to 5th September 2007 4. Balance under scheme from previous return: 293,969 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: 35,891 7 Balance under scheme not yet issued/allotted at end of period 258,078 8. Number and class of securities originally listed and the date of admission 293,969 Ordinary Shares of 10p each - 6th March 2006 9. Total number of securities in issue at the end of the period 55,961,538 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: 5th September 2007 1. Name of applicant: Genus plc 2. Name of scheme Genus plc 2004 Company Share Plan Part A 3. Period of return: 6th March 2007 to 5th September 2007 4. Balance under scheme from previous return: 130,634 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 130,634 8. Number and class of securities originally listed and the date of admission 155,634 Ordinary Shares of 10p each - 6th March 2006 9. Total number of securities in issue at the end of the period 55,961,538 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: 5th September 2007 1. Name of applicant: Genus plc 2. Name of scheme Genus plc 2004 Company Share Plan Part B 3. Period of return: 6th March 2007 to 5th September 2007 4. Balance under scheme from previous return: 668,106 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 668,106 8. Number and class of securities originally listed and the date of admission 697,106 Ordinary Shares of 10p each - 6th March 2006 9. Total number of securities in issue at the end of the period 55,961,538 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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