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 20 March 2007 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| --------------- ---------------- We were advised on 19 March 2007 by Computershare Plan Managers that the following Directors of BP p.l.c received the numbers of BP ordinary shares (ISIN number GB0007980591) shown opposite their names on 12 March 2007 at GBP5.26 per share, as a result of reinvestment of dividends on shares held through the BP Sharematch UK Plan :- Directors Dr. A.B. Hayward 49 shares Mr. I. C. Conn 49 shares Mr A G Inglis 41 shares Mr J.A. Manzoni 44 shares This notice is given in fulfilment of the obligation under section 324(5) of the Companies Act 1985 and DR3.1.2R. 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: 20 March 2007 /s/ D. J. PEARL .............................. D. J. PEARL Deputy Company Secretary