Disclosure of Holdings

TR-1: Notifications of Major Interests in Shares

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

Serica Energy Plc Ord Usd0.10

2. Reason for notification (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):______________

N/A

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

Mr Martin Christopher Macleish

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

Cenkos Channel Islands Nominee Company Limited A/C KG CLT

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

Friday 30th May 2008

6. Date on which issuer notified:

Tuesday 2nd June 2008

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

Over the 3% threshold

8: Notified Details

A: Voting rights attached to shares

Class/type of shares

If possible use ISIN code

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of shares

Number of voting rights

Number of shares

Number of voting rights

Percentage of voting rights

Direct

Indirect

Direct

Indirect

Ordinary Shares USD0.10 

GB00B0CY5V57

5,107,544

5,107,544

6,107,544

6,107,544

3.46%

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ conversion period/date 

No. of voting rights that may be acquired (if the instrument exercised/converted)

Percentage of voting rights

N/A

Total (A+B)

Number of voting rights

Percentage of voting rights

6,107,544

3.46%

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

See Section 4

Proxy Voting:

10. Name of proxy holder:

See Section 4

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:

Rob Tamburrini

15. Contact telephone name:

020 7487 7300