Holding(s) in Company

Oxford Catalysts Group PLC
03 August 2007



TR-1(i): NOTIFICATION OF MAJOR INTERESTS IN SHARES


1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached (ii):

Oxford Catalysts Group PLC


2. Reason for the notification (please state Yes/No): ( )


An acquisition or disposal of voting rights: (No)


An acquisition or disposal of financial instruments which may result in the
acquisition of shares already issued to which voting rights are attached: (No)


An event changing the breakdown of voting rights: (Yes)


Other (please specify) : (No)


3. Full name of person(s) subject to the notification obligation (iii):

Credit Suisse Securities (Europe) Limited


4. Full name of shareholder(s) (if different from 3.) (iv):

-


5. Date of the transaction (and date on which the threshold is crossed or
reached if different) (v):

30.07.07


6. Date on which issuer notified:

01.08.07


7. Threshold(s) that is/are crossed or reached:

4%


8. Notified details:

-


A: Voting rights attached to shares

Class/type of shares if possible using    Situation previous to the Triggering
the ISIN CODE                                       transaction (vi)
                                        Number of      Number of voting Rights
                                        shares         (viii)

ORD - GB00B11SZ269                         1,540,632                 1,540,632



Resulting situation after the triggering transaction (vii)

Class/type of shares if      Number of    Number of voting      % of voting
possible using the ISIN CODE shares       rights (ix)           rights

                             Direct       Direct (x)   Indirect Direct  Indirect
                                                       (xi)

                              1,540,632    1,540,632   N/A       3.80%  N/A


B: Financial Instruments

Resulting situation after the triggering transaction (xii)

Type of     Expiration Exercise/       Number of voting rights that may  % of
financial   Date       Conversion      be acquired if the instrument is  voting
instrument  (xiii)     Period/ Date    exercised/ converted.             rights
                       (xiv)







Total (A+B)
Number of voting rights                      % of voting rights

         1,540,632                                3.80%


9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable (xv):

Credit Suisse Securities (Europe) Limited is a part of the Investment Banking
division of Credit Suisse ('CSIBD'), which is part of Credit Suisse Group
('CSG'). CSIBD is a segregated business unit within CSG with an independent
management structure and exercises its voting rights independently from other
divisions of CSG.


Proxy Voting:


10. Name of the proxy holder:

.................


11. Number of voting rights proxy holder will cease to hold:

.................


12. Date on which proxy holder will cease to hold voting rights:

.................

13. Additional information:

.................


14. Contact name:

Glenda Burford


15. Contact telephone number:

[phone]











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