Rule 8.1- (Sygen)

Genus PLC
02 November 2005


                                                                        FORM 8.1

          DEALINGS BY OFFERORS, OFFEREE COMPANIES OR THEIR ASSOCIATES
                  FOR THEMSELVES OR FOR DISCRETIONARY CLIENTS
      (Rules 8.1(a) and (b)(i) of The City Code on Takeovers and Mergers)

Name of purchaser/vendor *                      Genus plc
Company dealt in                                Sygen International plc
Relevant security dealt in                      Ordinary shares of 10 pence
                                                each
Name of offeree / offeror with which            Genus plc
associated
Specify category and nature of associate status Offeror
#
Date of dealing                                 2 November 2005

DEALINGS +

Amount bought         Price per unit (currency must be stated)
1,153,185             62.1489 pence
Amount sold           Price per unit (currency must be stated)
N/A                   N/A

Resultant total amount and percentage of the same relevant
security owned or controlled                                 7,153,185 (2.42%)

IS A SUPPLEMENTAL FORM 8 (DERIVATIVE)/FORM 8 (OPTION) ATTACHED? NO

Date of disclosure                          2 November 2005

Contact name                                Tom Forcier
Telephone number                            020 7614 8399

* Specify the owner or controller in addition to the person dealing. The naming
of nominees or vehicle companies is insufficient. In the case of disclosure of
dealings by fund managers on behalf of discretionary clients, the clients need
not be named.
# See the definition of 'associate' in the Definitions Section of the Code.
+ If disclosing dealings/holdings in derivatives or options, please attach
Supplemental Form 8 (Derivative) or Supplemental Form 8 (Option), as
appropriate.

For details of the Code's dealing disclosure requirements, see Rule 8 and its
Notes which can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk.




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