Director/PDMR Shareholding

Oxford Catalysts Group PLC
20 April 2007


                           Oxford Catalysts Group PLC


                             Director Shareholding


The Company has been notified pursuant to transitional provision 7 of the
Disclosure & Transparency Rules that the following are interested in 3 % or more
of the voting rights of the Company:

Name                                                Number of        % of voting
                                                       voting
                                                  rights held        rights held
                                                     directly
Dr Tiancun Xiao                                     4,130,500              11.1%
Dr Malcolm Leslie Hodder Green                      3,379,500               9.1%



The above percentages are based on 37,341,183 being the total number of its
issued ordinary share each carrying voting rights.


Contact:


Oxford Catalysts Group plc Paul Barnes, Company Secretary - 01235 841 700



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