SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 ---------------- FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13A-16 OR 15D-16 OF THE SECURITIES EXCHANGE ACT OF 1934 MARCH 11, 2005 RIO TINTO PLC RIO TINTO LIMITED ABN 96 004 458 404 (Translation of registrant's name (Translation of registrant's name into English) into English) 6 ST JAMES'S SQUARE 55 COLLINS STREET LONDON, SW1Y 4LD, UNITED KINGDOM MELBOURNE, VICTORIA 3000, AUSTRALIA (Address of principal executive offices) (Address of principal executive offices) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F: Form 20-F [X] Form 40-F [ ] Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ___ Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ___ Indicate by check mark whether the registrant by furnishing the information contained in this Form, the registrant 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] If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- ________ SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned, thereunto duly authorized. RIO TINTO PLC RIO TINTO LIMITED (Registrant) (Registrant) By: /s/ A V Lawless By: /s/ A V Lawless -------------------------------- ------------------------------- Name: A V Lawless Name: A V Lawless Title: Assistant Secretary Title: Assistant Secretary Date March 11, 2005 Date March 11, 2005 EXHIBITS 99.1 Rio Tinto Limited off-market buy-back tender news release 99.2 Rio Tinto Limited off-market buy-back tender presentation commentary 99.3 Appendix 3C