Holding(s) in Company

RNS Number:6878K
EnCore Oil PLC
27 December 2007


EnCore Oil Plc
27 December 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):

EnCore Oil plc

2. Reason for the notification

An acquisition or disposal of voting rights:

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

BlackRock Inc

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

BlackRock Investment Management (UK) Limited

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

20 December 2007

6. Date on which issuer notified:

27 December 2007

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

5%

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)
GB00B06KL332                            n/a            n/a



Resulting situation after the triggering transaction (vii)

Class/type of shares if       Number of Number of voting     % of voting
possible using the ISIN       shares    rights (ix)          rights
CODE                          Direct    Direct  Indirect     Direct   Indirect
                                        (x)     (xi)
GB00B06KL332                  n/a       n/a     17,890,113   n/a      5.85%

B: Financial Instruments
Resulting situation after the triggering transaction (xii)

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

Total (A+B)
Number of voting rights                      % of voting rights
             17,890,113                                   5.85%

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:

14. Contact name:
Thomas Hone

15. Contact telephone number:
020 7743 2098

EnCore Oil plc                                 www.encoreoil.co.uk
Eugene Whyms, Chief Financial Officer          [phone]

Aquila Financial Limited                       www.aquila-financial.com
Peter Reilly                                   [phone]
Yvonne Fraser                                  [phone]

Hanson Westhouse Limited
Tim Feather / Matthew Johnson                  [phone]

KBC Peel Hunt
Jonathan Marren                                [phone]




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

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