Holding(s) in Company

Rio Tinto PLC 30 May 2006 SCHEDULE 10 NOTIFICATION OF MAJOR INTERESTS IN SHARES 1) NAME OF COMPANY Rio Tinto plc 2) NAME OF SHAREHOLDER HAVING A MAJOR INTEREST Capital Group Companies, Inc 3) Please state whether notification indicates that it is regarding the holding of the shareholder named in 2 above; in respect of a non-beneficial interest; or in the case of an individual holder if it is a holding of that person's spouse or children under the age of 18 As in (2) above 4) Name of the registered holder(s) and, if more than one holder, the number of shares held by each of them. See Schedule below 5) Number of shares/amount of stock acquired. Unknown 6) Percentage of issued Class Unknown 7) Number of shares/amount of stock disposed - 8) Percentage of issued Class - 9) Class of security Ordinary shares of 10p 10) Date of transaction Unknown 11) Date listed company informed 30 May 2006 12) Total holding following this notification 42,254,917 13) Total percentage holding of issued class following this notification 4.007% 14) Any additional information - 15) Name of contact and telephone number for queries Louise Brennan - (020 7753 2116) 16) Name and signature of duly authorised officer of the listed company responsible for making this notification M J Whyte Date of Notification 30 May 2006 Letter to: Rio Tinto PLC Dated: 26 May 2006 Re: Section 198 Notification Company Secretary: Enclosed is a Section 198 Notification dated 25 May 2006. Please note that one or more of the affiliates of The Capital Group Companies, Inc. have made notifications to your company pursuant to Section 198 previously. For a description of our organization, please visit our Web site at www.capgroup.com. For the purposes of this Notification an outstanding share balance of 1,054,655,511 shares was used to calculate the percentages of holdings of the relevant share capital which determine the notifiable interest. We believe this outstanding share balance is current; however, if this number is not accurate, please contact us as soon as possible so we may make the necessary revisions to this Notification. Should you have any questions or require additional information, please contact Gina Martinez or Vivien Tan at (213)615-0469, or send a fax message to (213) 486-9698. Alternatively, you may contact us via E-mail at GRGroup@capgroup.com. Letter from: The Capital Group Companies, Inc. 198/90/I Letter to: Rio Tinto plc Dated 25 May 2006 SECTION 198 NOTIFICATION Notification of Increase This Notice is given by The Capital Group Companies, Inc. on behalf of its affiliates, including Capital Research and Management Company, Capital International S.A., Capital International, Inc., Capital International Limited, and Capital Guardian Trust Company, pursuant to Section 198 of the Companies Act 1985. The interest in the relevant share capital indicated below arises by virtue of holdings attributed to the Companies (See Schedule A). These holdings form part of funds managed on behalf of investment clients by the Companies. Share capital to which this relates: Ordinary Shares (1,054,655,511 shares outstanding) Number of shares in which the Companies have an interest: 42,254,917 Name(s) of registered holder(s): See Schedule B As of 25 May 2006 Rio Tinto plc Number of Percent of Shares Outstanding The Capital Group Companies, Inc. ('CG') holdings 42,254,917 4.007% Holdings by CG Management Companies and Funds: •Capital Guardian Trust Company 7,775,722 0.737% •Capital International Limited 10,221,104 0.969% •Capital International S.A. 1,109,862 0.105% •Capital International, Inc. 617,993 0.059% •Capital Research and Management Company 22,530,236 2.136% Schedule A Schedule of holdings in Rio Tinto plc As of 25 April 2005 Capital Guardian Trust Company Registered Name Local Shares State Street Nominees Limited 814,300 Bank of New York Nominees 681,825 Northern Trust 60,300 Chase Manhattan Bank Australia Limited 3,600 Chase Nominees Limited 3,001,163 BT Globenet Nominees Ltd. 150,600 Midland Bank plc 506,775 Cede & Co. 1,087,604 Deutsche Bank Mannheim 1,300 Bankers Trust 241,200 Barclays Bank 22,200 Royal Trust 7,100 Brown Bros. 7,300 Nortrust Nominees 615,800 MSS Nominees Limited 19,000 State Street Bank & Trust Co. 50,900 Citibank 2,400 Citibank NA 8,500 Deutsche Bank AG 1,900 HSBC Bank plc 600 Mellon Bank N.A. 31,600 ROY Nominees Limited 37,500 Mellon Nominees (UK) Limited 203,855 Bank One London 2,800 HSBC 7,400 JP Morgan Chase Bank 208,200 TOTAL 7,775,722 Schedule B Capital International Limited Registered Name Local Shares State Street Nominees Limited 442,982 Bank of New York Nominees 2,043,713 Northern Trust 1,288,983 Chase Nominees Limited 1,358,499 Midland Bank plc 306,558 Bankers Trust 69,000 Barclays Bank 49,500 Citibank London 51,900 Nortrust Nominees 1,252,107 MSS Nominees Limited 55,300 State Street Bank & Trust Co. 1,007,587 Lloyds Bank 14,100 Citibank 33,954 Hong Kong & Shanghai Banking Corp 30,200 Citibank NA 168,100 Standard Chartered Bank (Hong Kong) 25,700 Deutsche Bank AG 96,789 Chase Manhattan Nominee Ltd 58,000 State Street Australia Limited 114,674 HSBC Bank plc 236,300 Mellon Bank N.A. 44,500 Northern Trust AVFC 316,900 KAS UK 29,900 Mellon Nominees (UK) Limited 94,100 Bank One London 100,500 HSBC 5,900 JP Morgan Chase Bank 527,620 Raiffeisen Zentral Bank 257,453 Fortis Bank 18,100 Metzler Seel Sohn & Co. 59,100 Nordea Bank 38,185 Bayerische Hypo Und Vereinsbank AG 24,900 ----------------------------------------------------------------------------- TOTAL 10,221,104 Schedule B Capital International S.A. Registered Name Local Shares State Street Nominees Limited 8,400 Bank of New York Nominees 1,200 Chase Nominees Limited 216,095 Midland Bank plc 55,600 Barclays Bank 18,000 Pictet & Cie, Geneva 25,900 Brown Bros. 7,000 Nortrust Nominees 2,800 Morgan Stanley 5,900 J.P. Morgan 486,267 State Street Bank & Trust Co. 32,200 Lloyds Bank 10,800 Citibank NA 13,200 HSBC Bank plc 115,400 Lombard Odier Et Cie, Geneva 73,000 Metzler Seel Sohn & Co. 20,900 Credit Suisse, Zurich 17,200 ___________________________________________________________________________ TOTAL 1,109,862 Schedule B Capital International, Inc. Registered Name Local Shares State Street Nominees Limited 182,550 Bank of New York Nominees 57,522 Northern Trust 4,800 Chase Nominees Limited 206,200 Midland Bank plc 13,800 Bankers Trust 1,700 Brown Bros. 7,200 Nortrust Nominees 52,746 State Street Bank & Trust Co. 22,200 Sumitomo Trust & Banking 1,700 Citibank 2,600 Citibank NA 18,856 State Street Australia Limited 2,400 HSBC Bank plc 26,259 JP Morgan Chase Bank 17,460 ___________________________________________________________________________ TOTAL 617,993 Schedule B Capital Research and Management Company Registered Name Local Shares State Street Nominees Limited 12,998,533 Chase Nominees Limited 8,419,473 State Street Bank & Trust Co. 1,112,230 ___________________________________________________________________________ TOTAL 22,530,236 This information is provided by RNS The company news service from the London Stock Exchange

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Rio Tinto (RIO)
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