Holding(s) in Company

BowLeven Plc
12 March 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):

Bowleven Plc

2. Reason for the notification (please state Yes/No): ( )

An acquisition or disposal of voting rights: ( x )

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

An event changing the breakdown of voting rights: ( )

Other (please specify) : ( )

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):

.................

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

8th March 2007

6. Date on which issuer notified:

9th March 2007

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

Gone from 11% to 10%

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)

GB00B04PYL99                            8,164,711      8,164,711

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)

GB00B04PYL99                  N/A        N/A     8,029,711   N/A      10.82%

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)



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

8,029,711                                    10.82%


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

BlackRock Investment Management (UK) Limited - 8,029,711  (10.82%)


Proxy Voting:

10. Name of the proxy holder:

.................

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:

.................

15. Contact telephone number:

.................


Annex to Notification Of Major Interests In Shares (xvi)

A: Identity of the person or legal entity subject to the notification obligation

Full name (including legal form for legal entities):

BlackRock Inc

Contact address (registered office for legal entities):

33 King William Street, London, EC4R 9AS

Phone number:

020 7743 2098

Other useful information (at least legal representative for legal persons):

Thomas Hone

B: Identity of the notifier, if applicable (xvii)

Full name:

.................

Contact address:

.................

Phone number:

.................

Other useful information (e.g. functional relationship with the person or legal
entity subject to the notification obligation):

.................

C: Additional information :

.................



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