FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN ISSUER Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2007 UNILEVER PLC (Translation of registrant's name into English) UNILEVER HOUSE, BLACKFRIARS, LONDON, 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 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 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- _______ Exhibit 99 attached hereto is incorporated herein by reference. 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. UNILEVER PLC /S/ S G WILLIAMS By S G WILLIAMS SECRETARY Date: March 12, 2007 EXHIBIT INDEX ------------- EXHIBIT NUMBER EXHIBIT DESCRIPTION 99 Notice to London Stock Exchange dated 12 March 2007, Unilever Share Buy-back Exhibit 99 UNILEVER ANNOUNCES COMMENCEMENT OF SHARE BUY-BACK PROGRAMME Unilever today announces the commencement of its share buy-back programme. This follows the company's announcement on 8 February 2007 of its plan to buy back ordinary shares up to an aggregate market value of Euro 1.5 billion in 2007. The purpose of the share buy-back programme is to provide a flexible route for returning cash to shareholders, over and above regular annual dividends. The buy-back may be of either Unilever NV shares, Unilever PLC shares or any combination of the two. The buy-back will take place within the limitations of the authority which has been granted or will be granted to the Boards by the respective general meetings of shareholders. Any share purchases during close periods will be made according to irrevocable mandates issued prior to the periods concerned. About Unilever Unilever's mission is to add vitality to life. We meet everyday needs for nutrition, hygiene and personal care with brands that help people feel good, look good and get more out of life. Unilever is one of the world's leading suppliers of fast moving consumer goods with strong local roots in more than 100 countries across the globe. Its portfolio includes some of the world's best known and most loved brands including twelve EUR1 billion brands and global leadership in many categories in which the company operates. The portfolio features brand icons such as: Knorr, Hellmann's, Lipton, Blue Band, Flora/Becel, Bertolli; Dove, Lux, Pond's, Axe/ Lynx, Rexona/Sure; Skip/Persil; Cif and Domestos. Unilever has around 206,000 employees in approaching 100 countries and generated annual sales of EUR40 billion in 2005. For more information about Unilever and its brands, please visit www.unilever.com. SAFE HARBOUR STATEMENT: This announcement may contain forward-looking statements, including 'forward-looking statements' within the meaning of the United States Private Securities Litigation Reform Act of 1995. Words such as 'expects', 'anticipates', 'intends' or the negative of these terms and other similar expressions of future performance or results, including financial objectives to 2010, and their negatives are intended to identify such forward-looking statements. These forward-looking statements are based upon current expectations and assumptions regarding anticipated developments and other factors affecting the Group. They are not historical facts, nor are they guarantees of future performance. Because these forward-looking statements involve risks and uncertainties, there are important factors that could cause actual results to differ materially from those expressed or implied by these forward-looking statements, including, among others, competitive pricing and activities, consumption levels, costs, the ability to maintain and manage key customer relationships and supply chain sources, currency values, interest rates, the ability to integrate acquisitions and complete planned divestitures, physical risks, environmental risks, the ability to manage regulatory, tax and legal matters and resolve pending matters within current estimates, legislative, fiscal and regulatory developments, political, economic and social conditions in the geographic markets where the Group operates and new or changed priorities of the Boards. Further details of potential risks and uncertainties affecting the Group are described in the Group's filings with the London Stock Exchange, Euronext Amsterdam and the US Securities and Exchange Commission, including the Annual Report & Accounts on Form 20-F. These forward-looking statements speak only as of the date of this announcement. Except as required by any applicable law or regulation, the Group expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in the Group's expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based.