Holding(s) in Company

Pantheon Resources PLC
20 December 2007

Pantheon Resources Plc

20 December 2007

TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES



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



Pantheon Resources 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:



Barclays PLC



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



Barclays Stockbrokers Ltd



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



19 December 2007



6. Date on which issuer notified:



20 December 2007



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



8% to 9%



8. Notified details:



A: Voting rights attached to shares




Class/type of shares Situation previous to the                      Resulting situation after the
                                                                    triggering transaction
                     triggering transaction


If possible using    Number of shares Number of                     Number of    Number of  % voting
the ISIN code                         voting                        shares       voting     rights

                                      rights                                     Rights     Indirect

                                                                                 Indirect
GB00B125SX82         1,509,185        1,509,185                     1,623,998    1,623,998  9.52%







B: Financial Instruments



Resulting situation after the triggering transaction


Type of financial        Expiration date          Exercise/Conversion      Number of voting rights   % voting rights
instrument                                        Period/Date              that may be acquired if
                                                                           this instrument is
                                                                           exercised/converted





Total (A+B)                                                    % of voting rights

Number of voting rights
1,623,998                                                      9.52%





9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively

held, if applicable:



N/A



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:



Geoff Smith



15. Contact telephone number:



020 7116 2913


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