Holding(s) in Company

Rio Tinto PLC 05 May 2006 NOTIFICATION OF MAJOR INTERESTS IN SHARES 1) NAME OF COMPANY RIO TINTO PLC 2) NAME OF SHAREHOLDER HAVING A MAJOR INTEREST BARCLAYS PLC 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 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 5 MAY 2006 12) Total holding following this notification 41,776,631 13) Total percentage holding of issued class following this notification 3.95% 14) Any additional information 15) Name of contact and telephone number for queries MS L BRENNAN - 020 7753 2116 16) Name and signature of duly authorised officer of the listed company responsible for making this notification MR MJ WHYTE Date of Notification .. 5 MAY 2006 Letter to: Rio Tinto PLC Dated: 3 May 2006 Companies Art 1985 ('The Act') - Part VI I hereby inform you that as at 2 May 2006 Barclays PLC, through the legal entitles listed on the attached schedule, has a notifiable interest in the capital of your Company of 3.95%. Details of this interest, together with a breakdown between registered holders (as required by Section 202(3) of the Act), are enclosed. The issued capital of 1,058,763,405 is the latest figure available to us. If this is incorrect please let me know. From: Barclays LEGAL ENTITY REPORT RIO TINTO SEDOL : 0718875 As at 02 May 2006 Barclays PLC, through the legal entities listed below, had a notifiable interest in 41,776,631 ORD GBP0.10 representing 3.95 % of the issued share capital of 1,058,763,405 units. Legal Entity Holding Percentage Held Barclays Global Investors Japan Trust & Banking 1,272,213 .1150 Barclays Global Investors Australia Ltd 311,079 .0294 Barclays Private Bank and Trust Ltd 142,486 .0135 Barclays Private Bank Ltd 571,813 .0540 Barclays Bank Trust Company Ltd 289,552 .0273 Barclays Private Bank and Trust Ltd 7,542 .0007 Barclays Bank PLC 26,355 .0025 Barclays Capital Inc 716,641 .0677 Barclays Global Investors Japan Ltd 248,557 .0235 Barclays Global Investors Ltd 12,518,515 1.1824 Barclays Global Investors, N.A. 11,139,596 1.0521 Gerrard Ltd 4,782,117 .4517 Barclays Global Fund Advisors 3,184,589 .3008 Barclays Life Assurance Co Ltd 1,580,222 .1493 Barclays Global Investors Canada Ltd 76,842 .0073 Barclays Capital Securities Ltd 4,963,512 .4688 Group Holding 41,776,631 3.9460 REGISTERED HOLDERS REPORT RIO TINTO SEDOL : 0718875 As at 02 May 2006 Barclays PLC, through the registered holders listed below, had a notifiable interest in 41,776,631 ORD GBP0.10 representing 3.95 % of the issued share capital of 1,058,763,405 units. Registered Holder Account Designation Holding BANK OF IRELAND 426360 8,078 BANK OF NEW YORK 75,792 BARCLAYS CAPITAL NOMINEES LIMITED 26,355 BARCLAYS CAPITAL NOMINEES LIMITED 870,842 BARCLAYS CAPITAL NOMINEES LIMITED 2,552,030 BARCLAYS CAPITAL NOMINEES LIMITED 334,221 Barclays Capital Securities Ltd. 1,508,620 Barclays Capital Securities Ltd. 32,020 Barclays Capital Securities Ltd. 350,400 Barclays Capital Securities Ltd. 32,020 Barclays Global Investors Canada 76,842 Barclays Trust Co & Others 27,605 BARCLAYS TRUST CO AS EXEC/ADM C 000000000000000000 5,315 Barclays Trust Co DMC69 C 000000000000000000 18,360 Barclays Trust Co E99 C 000000000000000000 4,451 Barclays Trust Co R69 C 000000000000000000 233,821 BNP PARIBAS 44,091 CHASE NOMINEES LTD 16376 527,416 CHASE NOMINEES LTD 20947 2,341,550 CHASE NOMINEES LTD 28270 338,873 CHASE NOMINEES LTD 28270 29,076 CIBC MELLON GLOBAL SECURITIES 29,282 Clydesdale Nominees HGB0125 00032349601 770 Clydesdale Nominees HGB0125 00032401801 290 Clydesdale Nominees HGB0125 00032408501 531 Clydesdale Nominees HGB0125 00032419001 1,000 Clydesdale Nominees HGB0125 00032449201 2,281 Clydesdale Nominees HGB0125 00032476001 304 Clydesdale Nominees HGB0125 00032479401 397 Clydesdale Nominees HGB0125 00049699401 2,500 Clydesdale Nominees HGB0125 00049775301 798 Clydesdale Nominees HGB0125 00059396501 421 Clydesdale Nominees HGB0125 00059419801 88 Clydesdale Nominees HGB0125 00059441401 1,864 Clydesdale Nominees HGB0125 00059553401 665 Clydesdale Nominees HGB0125 00059571201 312 Clydesdale Nominees HGB0125 00059580101 578 Clydesdale Nominees HGB0125 00059595001 285 Clydesdale Nominees HGB0125 00059710301 296 Clydesdale Nominees HGB0125 00059721901 444 Clydesdale Nominees HGB0125 00059732401 769 Clydesdale Nominees HGB0125 00059737501 937 Clydesdale Nominees HGB0125 00059738301 1,215 Clydesdale Nominees HGB0125 00059744801 595 Clydesdale Nominees HGB0125 00064544201 837 Clydesdale Nominees HGB0125 00065136101 331 Clydesdale Nominees HGB0125 00066860401 279 Clydesdale Nominees HGB0125 00067940101 4,422 Clydesdale Nominees HGB0125 00069108801 493 Clydesdale Nominees HGB0125 00069238601 1,163 Clydesdale Nominees HGB0125 00069296301 3,214 Clydesdale Nominees HGB0125 00069300501 496 Clydesdale Nominees HGB0125 00069301301 5,261 Clydesdale Nominees HGB0125 00069303001 895 Clydesdale Nominees HGB0125 00069334001 431 Clydesdale Nominees HGB0125 00069339001 408 Clydesdale Nominees HGB0125 00069340401 372 Clydesdale Nominees HGB0125 00069355201 2,500 Clydesdale Nominees HGB0125 00069372201 523 Clydesdale Nominees HGB0125 00069379001 296 Clydesdale Nominees HGB0125 00069390001 1,193 Clydesdale Nominees HGB0125 00069402801 276 Clydesdale Nominees HGB0125 00069447801 3,300 Clydesdale Nominees HGB0125 00069461301 576 Clydesdale Nominees HGB0125 00069464801 267 Clydesdale Nominees HGB0125 00069476101 449 Clydesdale Nominees HGB0125 00069491501 438 Clydesdale Nominees HGB0125 00069612801 350 Clydesdale Nominees HGB0125 00069613601 411 Clydesdale Nominees HGB0125 00069614401 417 Clydesdale Nominees HGB0125 00069720501 1,750 Clydesdale Nominees HGB0125 00069721301 1,750 Clydesdale Nominees HGB0125 00069732901 2,869 Clydesdale Nominees HGB0125 00069738801 315 Clydesdale Nominees HGB0125 00069745001 3,900 Clydesdale Nominees HGB0125 00069751501 1,750 Clydesdale Nominees HGB0125 00069766301 1,593 Clydesdale Nominees HGB0125 00069771001 12,500 Clydesdale Nominees HGB0125 00069772801 12,500 Clydesdale Nominees HGB0125 00069803101 1,068 Clydesdale Nominees HGB0125 00070295001 334 Clydesdale Nominees HGB0125 00070314001 305 Clydesdale Nominees HGB0125 00070325601 716 Clydesdale Nominees HGB0125 00070331001 650 Clydesdale Nominees HGB0125 00070335301 640 Clydesdale Nominees HGB0125 00070336101 269 Clydesdale Nominees HGB0125 00070339601 407 Clydesdale Nominees HGB0125 00070343401 181 Clydesdale Nominees HGB0125 00070381701 696 Clydesdale Nominees HGB0125 00070387601 301 Clydesdale Nominees HGB0125 00070388401 436 Clydesdale Nominees HGB0125 00070391401 268 Clydesdale Nominees HGB0125 00070403101 1,515 Clydesdale Nominees HGB0125 00070404001 452 Clydesdale Nominees HGB0125 00080750701 1,412 Clydesdale Nominees HGB0125 00080766301 403 Clydesdale Nominees HGB0125 00083011801 449 Clydesdale Nominees HGB0125 00086680501 459 Clydesdale Nominees HGB0125 00088608301 364 Clydesdale Nominees HGB0125 00088736501 430 Clydesdale Nominees HGB0125 00110014401 872 Clydesdale Nominees HGB0125 00120010601 2,050 Clydesdale Nominees HGB0125 00120142001 10,000 Clydesdale Nominees HGB0125 00300000001 417 Clydesdale Nominees HGB0125 00310007101 811 Clydesdale Nominees HGB0125 00310042001 350 Clydesdale Nominees HGB0125 00310070501 206 Clydesdale Nominees HGB0125 00310092601 1,112 Clydesdale Nominees HGB0125 00310128001 546 Clydesdale Nominees HGB0125 00310150701 236 Clydesdale Nominees HGB0125 00310186801 352 Clydesdale Nominees HGB0125 00310205801 297 Clydesdale Nominees HGB0125 00310230901 454 Clydesdale Nominees HGB0125 00310231701 345 Clydesdale Nominees HGB0125 00310246501 4,085 Clydesdale Nominees HGB0125 00310254601 500 Clydesdale Nominees HGB0125 00310255401 3,541 Clydesdale Nominees HGB0125 00310266001 230 Clydesdale Nominees HGB0125 00310311901 457 Clydesdale Nominees HGB0125 00310589801 219 Clydesdale Nominees HGB0125 00310590101 149 Clydesdale Nominees HGB0125 00310594401 338 Clydesdale Nominees HGB0125 00700009301 452 Clydesdale Nominees HGB0125 00700066201 373 Clydesdale Nominees HGB0125 00700069701 2,794 Clydesdale Nominees HGB0125 00700083201 291 Clydesdale Nominees HGB0125 00700106501 376 Clydesdale Nominees HGB0125 00700235501 323 Clydesdale Nominees HGB0225 00043684302 540 Clydesdale Nominees HGB0225 00048322102 2,080 Clydesdale Nominees HGB0225 00048401502 721 Clydesdale Nominees HGB0225 00059579802 588 Clydesdale Nominees HGB0225 00059727802 2,238 Clydesdale Nominees HGB0225 00067355102 500 Clydesdale Nominees HGB0225 00069334002 166 Clydesdale Nominees HGB0225 00069396002 433 Clydesdale Nominees HGB0225 00070160102 765 Clydesdale Nominees HGB0225 00070383302 1,728 Clydesdale Nominees HGB0225 00087093402 612 Clydesdale Nominees HGB0225 00700022002 277 Clydesdale Nominees HGB0225 00700207002 1,490 Clydesdale Nominees HGB0325 00070309403 340 Clydesdale Nominees HGB0325 00087093403 212 Gerrard Nominees Limited 602133 331 Gerrard Nominees Limited 602698 175 Gerrard Nominees Limited 603216 300 Gerrard Nominees Limited 608459 125 Gerrard Nominees Limited 611717 1,875 Gerrard Nominees Limited 615411 500 Gerrard Nominees Limited 621942 270 Gerrard Nominees Limited 622124 1,150 Gerrard Nominees Limited 629038 175 Gerrard Nominees Limited 630871 250 Gerrard Nominees Limited 631118 3,150 Gerrard Nominees Limited 640824 1,200 Gerrard Nominees Limited 642686 75 Gerrard Nominees Limited 643975 1,450 Gerrard Nominees Limited 652198 2,300 Gerrard Nominees Limited 654151 300 Gerrard Nominees Limited 659442 525 Gerrard Nominees Limited 659481 500 Gerrard Nominees Limited 659792 200 Gerrard Nominees Limited 660137 480 Gerrard Nominees Limited 660302 700 Gerrard Nominees Limited 660318 12,750 Gerrard Nominees Limited 660632 660 Gerrard Nominees Limited 660758 3,750 Gerrard Nominees Limited 660851 2,400 Gerrard Nominees Limited 660968 1,610 Gerrard Nominees Limited 768557 3,650 Gerrard Nominees Limited 770101 5,700 Gerrard Nominees Limited 774160 450 Gerrard Nominees Limited 781271 1,850 Greig Middleton Nominees Limited (GMl) 318,414 Greig Middleton Nominees Ltd (GM3) 126066DA 800 Greig Middleton Nominees Ltd (GM3) 220805DN 64,000 Greig Middleton Nominees Ltd (GM3) 523475DN 75,000 INVESTORS BANK AND TRUST CO. 119,478 INVESTORS BANK AND TRUST CO. 61,288 INVESTORS BANK AND TRUST CO. 1,452,827 INVESTORS BANK AND TRUST CO. 9,861 INVESTORS BANK AND TRUST CO. 100,045 INVESTORS BANK AND TRUST CO. 1,123,680 INVESTORS BANK AND TRUST CO. 293,305 INVESTORS BANK AND TRUST CO. 42,453 INVESTORS BANK AND TRUST CO. 17,097 INVESTORS BANK AND TRUST CO. 5,374 INVESTORS BANK AND TRUST CO. 187,760 INVESTORS BANK AND TRUST CO. 606,325 INVESTORS BANK AND TRUST CO. 239,609 INVESTORS BANK AND TRUST CO. 5,402,208 INVESTORS BANK AND TRUST CO. 46,923 INVESTORS BANK AND TRUST CO. 4,601 INVESTORS BANK AND TRUST CO. 312,384 INVESTORS BANK AND TRUST CO. 30,408 INVESTORS BANK AND TRUST CO. 2,610,753 INVESTORS BANK AND TRUST CO. 231,044 JP MORGAN (BGI CUSTODY) 16331 279,176 JP MORGAN (BGI CUSTODY) 16338 63,754 JP MORGAN (BGI CUSTODY) 16341 67,174 JP MORGAN (BGI CUSTODY) 16341 589,649 JP MORGAN (BGI CUSTODY) 16342 135,292 JP MORGAN (BGI CUSTODY) 16344 22,142 JP MORGAN (BGI CUSTODY) 16345 37,135 JP MORGAN (BGI CUSTODY) 16400 9,592,730 JP MORGAN (BGI CUSTODY) 17011 17,951 JP MORGAN (BGI CUSTODY) 18408 48,741 JPMORGAN CHASE BANK 34,465 JPMorgan Chase Bank 65,294 JPMorgan Chase Bank 14,097 JPMorgan Chase Bank 54,917 JPMorgan Chase Bank 10,971 JPMorgan Chase Bank 304 JPMorgan Chase Bank 3,826 JPMorgan Chase Bank 68,656 JPMORGAN CHASE BANK 98,866 JPMORGAN CHASE BANK 212,213 JPMorgan Chase Bank 54,881 JPMorgan Chase Bank 10,217 JPMorgan Chase Bank 110,222 JPMorgan Chase Bank 587,327 JPMorgan Chase Bank 145,756 JPMorgan Chase Bank 115,952 JPMorgan Chase Bank 153,864 JPMorgan Chase Bank 555 JPMorgan Chase Bank 29,884 JPMorgan Chase Bank 8,555 Master Trust Bank 1,557 Mellon Trust - US CUSTODIAN / 79,175 Mellon Trust - US CUSTODIAN / 70,641 MELLON TRUST OF NEW ENGLAND 70,381 Mitsubishi Trust International 888 Mitsui Asset 16,681 NORTHERN TRUST BANK - BGI SEPA 21,191 NORTHERN TRUST BANK - BGI SEPA 104,608 NORTHERN TRUST BANK - BGI SEPA 82,657 R C Greig Nominees Limited 2,816,204 R C Greig Nominees Limited a/c AK1 930,964 R C Greig Nominees Limited a/c BL1 130,050 R C Greig Nominees Limited a/c CM1 78,210 R C Greig Nominees Limited GP1 212,394 R C Greig Nominees Limited SA1 107,230 Reflex Nominees Limited 4,487 Reflex Nominees Limited 3,055 STATE STREET BANK & TRUST - W1 59,021 STATE STREET BANK AND TRUST CO 84,700 STATE STREET BOSTON 556,445 STATE STREET TRUST OF CANADA - 66,684 Sumitomo TB 225 The Northern Trust Company - U 47,629 Trust & Custody Services Bank 622 Trust & Custody Services Bank 10,519 ZEBAN NOMINEES LIMITED 571,813 Total 41,776,631 This information is provided by RNS The company news service from the London Stock Exchange

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