SECURITIES AND EXCHANGE COMMISSION
 

      Washington, D.C. 20549
 

 

      Form 6-K
 

       Report of Foreign Issuer
 

       Pursuant to Rule 13a-16 or 15d-16 of
           the Securities Exchange Act of 1934
 


          for the period ended 07 December 2009
 

           BP p.l.c.
                 (Translation of registrant's name into English)
 
 

                 1 ST JAMES'S SQUARE, LONDON, SW1Y 4PD, ENGLAND
                    (Address of principal executive offices)
 
 

     Indicate  by check mark  whether the  registrant  files or will file annual
     reports under cover Form 20-F or Form 40-F.
 
 
Form 20-F        |X|          Form 40-F
                         ---------------               ----------------
 
 

     Indicate by check mark whether the registrant by furnishing the information
     contained in this Form is also thereby  furnishing  the  information to the
     Commission  pursuant to Rule 12g3-2(b) under the Securities Exchange Act of
     1934.
 
 

Yes                            No        |X|
                         ---------------               ----------------
 
 


BP p.l.c. received on 4 December 2009 from Blackrock, Inc. a notification of their interests in BP Ordinary Shares of US$0.25 each dated 4 December 2009. The disclosure of their interest in accordance with DTR5 is attached.

This notice is given in fulfilment of BP p.l.c.'s obligation under DTR 5.8.12




TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi



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

BP 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
notification obligation: iii

BlackRock, Inc.

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


N/A

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

1st December 2009

6. Date on which issuer notified:

4th December 2009

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

Holding has gone above 5%


  

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type of
shares


if possible using
the 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

% of voting rights x

Direct

Direct  xi

Indirect  xii

Direct

Indirect

GB0007980591

N/A

N/A

N/A

N/A

    

1,142,207,815

N/A

   

6.09%   


B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial
instrument

Expiration
date  xiii

Exercise/ 
Conversion Period  xiv

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

% of voting
rights







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

Resulting situation after the triggering transaction

Type of financial
instrument

Exercise price

Expiration date  xvii

Exercise/
Conversion period xviii

Number of voting rights
instrument refers to

% of voting
rights  xix, xx

CFD

N/A

N/A

N/A

11,435,745

Nominal

Delta

0.06%


Put Option

GBP 4.40

18th December 2009

Until expiry

146,000

0.0008%










Total (A+B+C)

Number of voting rights

Percentage of voting rights

   

1,153,789,560


6.15%



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


On 1 December 2009, the Barclays Global Investors (BGI) business was acquired by BlackRock, Inc.
The combined holdings of BlackRock, Inc following this acquisition triggered this disclosure requirement.


BlackRock Investment Management (UK) Limited 132,891,526 (6.15%)


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:


BlackRock Compliance Disclosures Team

14. Contact name:

Stuart Watchorn

15. Contact telephone number:

020 7743 5741; stuart.watchorn@blackrock.com




 

 
 

      SIGNATURES


 
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
 
 
 
 

BP p.l.c.
(Registrant)
 


Dated: 07 December 2009

/s/ D. J. PEARL
..............................
D. J. PEARL
Deputy Company Secretary