Annual Information Update

Rio Tinto PLC
06 April 2006

               Regulatory announcement: annual information update

                         RIO TINTO PLC ('the Company')

                           ANNUAL INFORMATION UPDATE
              FOR THE 12 MONTHS UP TO AND INCLUDING 31 MARCH 2006

The Company announces that in accordance with the requirements of the Prospectus
Rule 5.2, the following information has been published or made available to the
public during the 12-month period ended 31 March 2006 in compliance with laws
and rules dealing with the regulation of securities, issuers of securities and
securities markets.

For the purpose of this update the information is only referred to and full
copies of each item can be found at the locations specified below.

1.     Announcements made via the Regulatory News Service ('RNS') a Regulatory
Information Service ('RIS').

 All documents listed below were published via PR Newswire, a Regulatory
Information Service, on the dates indicated.

Time/Date              Code          Name                     Headline
16:26 31-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
14:23 30-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
15:43 29-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:18 28-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
16:05 28-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:11 27-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:10 24-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
16:56 24-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
16:55 23-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:21 22-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
16:39 22-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
16:05 22-Mar-06        RIO           Rio Tinto PLC            Director/PDMR Shareholding
17:14 21-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
15:58 21-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
11:54 21-Mar-06        RIO           Rio Tinto PLC            Director/PDMR Shareholding
17:20 20-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
16:36 20-Mar-06        RIO           Rio Tinto PLC            Director/PDMR Shareholding
16:30 20-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:19 17-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:16 17-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
16:31 17-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:10 16-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
16:22 16-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
13:55 16-Mar-06        RIO           Rio Tinto PLC            Director/PDMR Shareholding
08:21 16-Mar-06        RIO           Rio Tinto PLC            Hope Downs mine
14:34 15-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:06 14-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
15:40 14-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
10:08 13-Mar-06        RIO           Rio Tinto PLC            Ashton Mining of Canada
17:35 10-Mar-06        RIO           Rio Tinto PLC            Annual Report and Accounts
16:36 10-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:20 09-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:32 08-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
07:00 08-Mar-06        RIO           Rio Tinto PLC            Director/PDMR Shareholding
17:31 07-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
13:09 07-Mar-06        RIO           Rio Tinto PLC            Management changes
17:32 06-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:26 02-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:23 01-Mar-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:24 28-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
16:50 27-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:33 24-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:15 23-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:14 22-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:56 21-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
18:30 20-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
18:12 20-Feb-06        RIO           Rio Tinto PLC            Director/PDMR Shareholding
17:21 16-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:22 15-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:34 14-Feb-06        RIO           Rio Tinto PLC            Chariot Resources Limited
16:57 14-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:00 13-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
07:00 13-Feb-06        RIO           Rio Tinto PLC            Director/PDMR Shareholding
17:20 10-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
16:48 08-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:23 07-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:37 06-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
16:51 03-Feb-06        RIO           Rio Tinto PLC            Transaction in Own Shares
15:48 03-Feb-06        RIO           Rio Tinto PLC            Additional Listing
07:19 02-Feb-06        RIO           Rio Tinto PLC            CNA - Mexico coal contract
07:00 02-Feb-06        RIO           Rio Tinto PLC            Rio Tinto 2005 annual results
10:10 31-Jan-06        RIO           Rio Tinto PLC            Coal & Allied - FY2005
09:13 27-Jan-06        RIO           Rio Tinto PLC            Exploration jv with Norilsk
11:32 23-Jan-06        RIO           Rio Tinto PLC            Director/PDMR Shareholding
17:24 18-Jan-06        RIO           Rio Tinto PLC            Transaction in Own Shares
12:26 18-Jan-06        RIO           Rio Tinto PLC            Cautionary announcement
07:07 18-Jan-06        RIO           Rio Tinto PLC            Coal & Allied 4QPR2005
07:00 18-Jan-06        RIO           Rio Tinto PLC            Rio Tinto 4 QOR 2005
17:29 17-Jan-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:11 16-Jan-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:20 13-Jan-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:27 12-Jan-06        RIO           Rio Tinto PLC            Transaction in Own Shares
16:21 12-Jan-06        RIO           Rio Tinto PLC            Notice of 4QOR
17:37 11-Jan-06        RIO           Rio Tinto PLC            Transaction in Own Shares
15:43 11-Jan-06        RIO           Rio Tinto PLC            Director/PDMR Shareholding
17:30 10-Jan-06        RIO           Rio Tinto PLC            Transaction in Own Shares
07:00 10-Jan-06        RIO           Rio Tinto PLC            Transaction in Own Shares
17:07 06-Jan-06        RIO           Rio Tinto PLC            Transaction in Own Shares
15:46 06-Jan-06        RIO           Rio Tinto PLC            Director/PDMR Shareholding
17:43 05-Jan-06        RIO           Rio Tinto PLC            Transaction in Own Shares
10:52 05-Jan-06        RIO           Rio Tinto PLC            Transaction in Own Shs-Amend
17:03 03-Jan-06        RIO           Rio Tinto PLC            Transaction in Own Shares
07:00 28-Dec-05        RIO           Rio Tinto PLC            Holding(s) in Company
17:14 21-Dec-05        RIO           Rio Tinto PLC            Director/PDMR Shareholding
17:23 19-Dec-05        RIO           Rio Tinto PLC            Share repurchase programme
17:09 19-Dec-05        RIO           Rio Tinto PLC            Transaction in Own Shares
17:15 16-Dec-05        RIO           Rio Tinto PLC            Transaction in Own Shares
17:32 15-Dec-05        RIO           Rio Tinto PLC            Transaction in Own Shares
15:59 15-Dec-05        RIO           Rio Tinto PLC            Director/PDMR Shareholding
17:06 14-Dec-05        RIO           Rio Tinto PLC            Transaction in Own Shares
07:01 08-Dec-05        RIO           Rio Tinto PLC            Statement re Argyle Diamonds
15:08 07-Dec-05        RIO           Rio Tinto PLC            Additional Listing
13:57 01-Dec-05        RIO           Rio Tinto PLC            Ashton Mining of Canada Inc.
11:59 30-Nov-05        RIO           Rio Tinto PLC            Lihir Gold
15:27 22-Nov-05        RIO           Rio Tinto PLC            Blocklisting Interim Review
09:26 22-Nov-05        RIO           Rio Tinto PLC            HIsmelt.
11:54 16-Nov-05        RIO           Rio Tinto PLC            Director/PDMR Shareholding
17:43 14-Nov-05        RIO           Rio Tinto PLC            Transaction in Own Shares
17:07 11-Nov-05        RIO           Rio Tinto PLC            Transaction in Own Shares
10:59 11-Nov-05        RIO           Rio Tinto PLC            Director/PDMR Shareholding
18:13 10-Nov-05        RIO           Rio Tinto PLC            Transaction in Own Shares
17:37 09-Nov-05        RIO           Rio Tinto PLC            Transaction in Own Shares
17:39 08-Nov-05        RIO           Rio Tinto PLC            Transaction in Own Shares
17:44 07-Nov-05        RIO           Rio Tinto PLC            Transaction in Own Shares
18:08 04-Nov-05        RIO           Rio Tinto PLC            Transaction in Own Shares
17:21 02-Nov-05        RIO           Rio Tinto PLC            Transaction in Own Shares
17:47 01-Nov-05        RIO           Rio Tinto PLC            Additional Listing
17:42 01-Nov-05        RIO           Rio Tinto PLC            Transaction in Own Shares
13:45 01-Nov-05        RIO           Rio Tinto PLC            Rio Tinto Investor Seminar
17:44 31-Oct-05        RIO           Rio Tinto PLC            Transaction in Own Shares
17:38 28-Oct-05        RIO           Rio Tinto PLC            Transaction in Own Shares
17:57 27-Oct-05        RIO           Rio Tinto PLC            Transaction in Own Shares
16:41 27-Oct-05        RIO           Rio Tinto PLC            Energy Resources of Australia
17:56 26-Oct-05        RIO           Rio Tinto PLC            Transaction in Own Shares
17:35 21-Oct-05        RIO           Rio Tinto PLC            Transaction in Own Shares
17:32 20-Oct-05        RIO           Rio Tinto PLC            Transaction in Own Shares
14:40 20-Oct-05        RIO           Rio Tinto PLC            Holding(s) in Company
15:50 19-Oct-05        RIO           Rio Tinto PLC            Holding(s) in Company
07:00 19-Oct-05        RIO           Rio Tinto PLC            Coal & Allied - 3QPR 2005
07:00 19-Oct-05        RIO           Rio Tinto PLC            Rio Tinto 3QOR 2005
14:57 18-Oct-05        RIO           Rio Tinto PLC            Further iron ore expansion
12:23 11-Oct-05        RIO           Rio Tinto PLC            European Commission
09:15 11-Oct-05        RIO           Rio Tinto PLC            Director/PDMR Shareholding
09:08 10-Oct-05        RIO           Rio Tinto PLC            Energy Resources of Australia
17:00 07-Oct-05        RIO           Rio Tinto PLC            Director/PDMR Shareholding
14:23 05-Oct-05        RIO           Rio Tinto PLC            Holding(s) in Company
07:00 05-Oct-05        RIO           Rio Tinto PLC            Rio Tinto Uranium formed
15:02 29-Sep-05        RIO           Rio Tinto PLC            Exploration seminar
17:28 28-Sep-05        RIO           Rio Tinto PLC            Director/PDMR Shareholding
09:14 21-Sep-05        RIO           Rio Tinto PLC            Director/PDMR Shareholding
07:57 16-Sep-05        RIO           Rio Tinto PLC            Lihir Gold
07:22 15-Sep-05        RIO           Rio Tinto PLC            Cortez Hills gold project
07:00 14-Sep-05        RIO           Rio Tinto PLC            Director/PDMR Shareholding
16:25 25-Aug-05        RIO           Rio Tinto PLC            Rio Tinto Iron Ore
18:25 17-Aug-05        RIO           Rio Tinto PLC            Holding(s) in Company
16:04 08-Aug-05        RIO           Rio Tinto PLC            Director/PDMR Shareholding
16:09 05-Aug-05        RIO           Rio Tinto PLC            Director/PDMR Shareholding
13:36 03-Aug-05        RIO           Rio Tinto PLC            Holding(s) in Company
07:01 03-Aug-05        RIO           Rio Tinto PLC            Madagascar project approved
07:00 03-Aug-05        RIO           Rio Tinto PLC            Interim Results
10:36 29-Jul-05        RIO           Rio Tinto PLC            Coal & Allied Interim 2005
07:23 20-Jul-05        RIO           Rio Tinto PLC            Coal & Allied - 2QPR 2005
07:00 20-Jul-05        RIO           Rio Tinto PLC            2Q 2005 operations review
15:36 12-Jul-05        RIO           Rio Tinto PLC            Director/PDMR Shareholding
07:00 01-Jul-05        RIO           Rio Tinto PLC            Hope Downs Joint Venture
07:00 21-Jun-05        RIO           Rio Tinto PLC            Private placement agreement
09:02 09-May-05        RIO           Rio Tinto PLC            Increased off-market buy-back
07:00 05-May-05        RIO           Rio Tinto PLC            Adoption of IFRS
16:32 29-Apr-05        RIO           Rio Tinto PLC            AGM - Results of voting
11:25 29-Apr-05        RIO           Rio Tinto PLC            Annual General Meeting
09:28 28-Apr-05        RIO           Rio Tinto PLC            Iron ore capacity increase
15:12 27-Apr-05        RIO           Rio Tinto PLC            Timing for IFRS information
15:53 26-Apr-05        RIO           Rio Tinto PLC            Coal & Allied
11:49 25-Apr-05        RIO           Rio Tinto PLC            Blocklisting Interim Review
08:09 20-Apr-05        RIO           Rio Tinto PLC            Coal & Allied - 1QPR 2005
07:00 20-Apr-05        RIO           Rio Tinto PLC            1QOR 2005
17:21 14-Apr-05        RIO           Rio Tinto PLC            2005 AGM - results of voting
11:19 14-Apr-05        RIO           Rio Tinto PLC            AGM Statement
18:01 08-Apr-05        RIO           Rio Tinto PLC            Holding(s) in Company



Copies of the documents published via RNS may be obtained from the RIS service
provided by the London Stock Exchange (www.londonstockexchange.com/en-gb/
pricesnews/marketnews/) and any related documents are available at the UKLA's
Document Viewing Facility, Financial Services Authority, 25 The North Colonnade,
Canary Wharf, London, E14 5HS.



Copies can also be located on the Company's website at www.riotinto.com.



2. Documents filed at Companies House

The Company has submitted filings to Companies House in relation to the
appointment and resignation of directors, the allotment of shares, transactions
in own shares and ordinary and special resolutions passed at the Company's
Annual General Meeting on 14 April 2005.

Copies of these documents can be found on the Companies House website at
www.companies-house.gov.uk or through Companies House Direct at
www.direct.companieshouse.gov.uk

Alternatively copies can be obtained from Companies House, Crown Way, Cardiff,
CF14 3UZ.

3. Documents filed with the Securities and Exchange Commission

The Company has submitted filings to the Securities and Exchange Commission ('
SEC')by virtue of having American Depositary Shares listed on the New York Stock
Exchange.  All the documents listed below were filed with the SEC.


Form                           Description                                         Filing Date
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2006-03-03
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2006-02-06
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2006-01-09
8-K/A        (Amend)Current report, item 4.01                                        2005-11-10
8-K/A        (Amend)Current report, item 4.01                                        2005-11-10
11-K         Annual report of employee stock purchase, savings and similar plans     2005-11-03
11-K         Annual report of employee stock purchase, savings and similar plans     2005-11-03
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2005-11-03
8-K          Current report, item 4.01                                               2005-10-28
8-K          Current report, item 4.01                                               2005-10-26
8-K          Current report, item 4.01                                               2005-10-26
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2005-09-09
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2005-08-04
SC 13D       General statement of acquisition of beneficial ownership                2005-07-08
3            Initial statement of beneficial ownership of securities                 2005-07-08
11-K         Annual report of employee stock purchase, savings and similar plans     2005-06-28
20-F         Annual and transition report of foreign private issuers (Sections 13    2005-06-27
             or 15(d))
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2005-06-03
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2005-05-05
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2005-04-15
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2005-03-17
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2005-03-11
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2005-03-03
F-6          Registration of American Depository Receipt shares, not immediately     2005-02-18
             effective
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2005-02-04
REGDEX/A     (Amend)(Paper)Registration of sale of securities (Regulation D and      2005-01-21
             Section 4(6) of the Securities Act of 1933), item 06
             Film# = 05002285
6-K          Report of foreign issuer (Rules 13a-16 and 15d-16)                      2005-01-05





Full details of these filings can be viewed at www.sec.gov/edgar/searchedgar/
webusers.htm



The Company's Annual Report for the year ended 31 December 2005 (published on 10
March 2006) can be found on the Company's website, as can the Company's Annual
Review and Summary Financial Statements for the year ended 31 December 2005, the
Interim Report 2005 published on 3 August 2005 and the 2006 AGM documents.



Copies can also be located on the Company's website at www.riotinto.com/library



Copies of all documents referred to above are also available for inspection at
the Company's registered office, 6 St James's Square, London SW1Y 4LD during
normal business hours.



This annual information update is required by and is being made pursuant to
Article 10 of the Prospectus Directive as implemented in the United Kingdom
(Prospectus Rule 5.2) and not for any other purpose and neither the Company, nor
any other person, takes any responsibility for, or makes any representation,
express or implied, as to the accuracy or completeness of, the information which
it contains.  This information is not necessarily up to date as at the date of
this annual information update and the Company does not undertake any obligation
to update any such information in the future.  Furthermore, such information may
have been prepared in accordance with the laws or regulations of a particular
jurisdiction and may not comply with or meet the relevant standards of
disclosure in any other jurisdiction.  This annual information update does not
constitute an offer of any securities addressed to any person and should not be
relied on by any person.



Further information regarding the Company and its activities is available at
www.riotinto.com


Matthew Whyte

Assistant Company Secretary
Rio Tinto plc
Tel: [phone]




                      This information is provided by RNS
            The company news service from the London Stock Exchange