Holding(s) in Company

Oxford Catalysts Group PLC
18 July 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: (Yes)


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: (No)


Other (please specify) : (No)


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

The University of Oxford


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):

13 July 2007


6. Date on which issuer notified:

16 July 2007


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

Reduction from 17.1% holding to 13% holding


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)

GB00B11SZ269                               6,375,990                 6,375,990



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)

                               4,831,321    4,831,321   NIL        13%  NIL


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)



N/A



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

                                 
4,831,321                                  13%


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

N/A


Proxy Voting:


10. Name of the proxy holder:

N/A


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

N/A


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

N/A


13. Additional information:

N/A


14. Contact name:

Dr William Barton


15. Contact telephone number:

01235 841 700



                      This information is provided by RNS
            The company news service from the London Stock Exchange