LONDON--(Marketwire - Dec 12, 2012) -

For filings with the FSA include the annex

For filings with issuer exclude the annex


TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

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

2 Reason for the notification (please tick the appropriate box or
boxes):

An acquisition or disposal of voting rights                    X

An acquisition or disposal of qualifying financial instruments
which may result in the acquisition of shares already issued
to which voting rights are attached

An acquisition or disposal of instruments with similar
economic effect to qualifying financial instruments

An event changing the breakdown of voting rights

Other (please specify):

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

4. Full name of shareholder(s)                              Section 9
(if different from 3.):iv

5. Date of the transaction and date on                      11th
which the threshold is crossed or                           December
reached: v                                                  2012

                                                            12th
6. Date on which issuer notified:                           December
                                                            2012

7. Threshold(s) that is/are crossed or                      10%
reached: vi, vii

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type     Situation previous
of shares      to the triggering
               transaction


if possible    Number of   Number of
using ISIN     Shares      Voting Rights
CODE

GB00B0CY5V57   18,205,512  18,205,512


Resulting situation after the triggering transaction

Number of     Number of voting        %of voting rights
Shares        rights

Indirect      Direct    Indirect      Direct     Indirect

18,300,912              18,300,912               10.01



B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial   Expiration date xiii    Exercise/Conversion
instrument                                  Period xiv


Number of voting rights that may be         % of voting rights
acquired if the instrument is exercised/
converted.


C: Financial Instruments with similar economic effect to Qualifying
Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financial   Exercise   Expiration   Exercise/Conversion
instrument          price      date xvii    period


Number of voting          % of voting rights xix,xx
instrument refers to

                          Nominal       Delta


Total (A+B+C)

Number of voting rights                    Percentage of voting rights

18,300,912                                 10.01%

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

Sum of Factored Shares
Held

Custodian               Total      Management Company

JP MORGAN, BOURNEMOUTH             FILUK-FIL INVESTMENT SERVICES (UK)
(C)                     18,300,912 LIMITED

Grand Total             18,300,912

Proxy Voting:

10. Name of the proxy holder:                        FIL Limited

11. Number of voting rights proxy holder will        95,400
acquire to hold:

12. Date on which proxy holder will acquire to hold 11th December 2012
voting rights:

13. Additional information:                    None

14. Contact name:                              Shelley Muller

15. Contact telephone number:                   fil-regreporting@fil.com 

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

END