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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers who have significant controls over the individuals in focus are always inapplicable. The offspring entities and appointments are those entities that the individuals in focus can influence on.

Clicking the links on parent entities or officers, and offspring entities or managed companies will put them in focus and show upstream or downstream connections. In general, ascendant entities can be found by moving toward upstream, and descendant entities are by toward downstream. In this way, progenitor entities such as grandparent companies (parents of parent), sibling companies (children of parent), partner companies (parents of child), and progeny entities such as grandchild companies (children of child) can be found easily.

Jump to: Offsprings
Parent entities and officers
Inapplicable
parent relation
Individuals in focus

Day, Helen Christine

child relation
Offspring entities and appointments 44
  • 1
    CNUC(UK) MINING CO. LTD - now
    RIO TINTO NAMIBIAN HOLDINGS LIMITED
    - 2019-12-13 02996686
    RTZ NAMIBIAN HOLDINGS LIMITED - 1997-06-02
    Unit 794 Salisbury House 29 Finsbury Circus, London, United Kingdom
    Active Corporate (35 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 5 - Secretary → ME
  • 2
    HCD COMPANY SECRETARIAL SERVICES LIMITED
    11839542
    840 Ibis Court Centre Park, Warrington, England
    Dissolved Corporate (1 parent)
    Officer
    2019-02-21 ~ dissolved
    IIF 45 - Director → ME
    Person with significant control
    2019-02-21 ~ dissolved
    IIF 47 - Ownership of shares – 75% or more OE
    IIF 47 - Ownership of voting rights - 75% or more OE
  • 3
    LA GRANJA UK HOLDINGS LIMITED - now
    RIO TINTO PERU LIMITED
    - 2023-08-25 05647302
    4th Floor The Charlotte Building, 17 Gresse Street, London, United Kingdom
    Active Corporate (32 parents, 1 offspring)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 36 - Secretary → ME
  • 4
    RIO TINTO AUSTRALIAN HOLDINGS LIMITED
    - now 00464176
    R.T.Z. AUSTRALIA HOLDINGS LIMITED - 1997-06-23
    6 St James's Square, London
    Active Corporate (33 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 37 - Secretary → ME
  • 5
    RIO TINTO BAHIA HOLDINGS LIMITED
    - now 01338672
    ORLINPOINT LIMITED - 2012-03-20
    6 St James's Square, London
    Active Corporate (30 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 23 - Secretary → ME
  • 6
    RIO TINTO BRAZILIAN HOLDINGS LIMITED
    - now 04986803
    SUMMERWAND LIMITED - 2004-02-03
    6 St James's Square, London
    Dissolved Corporate (22 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 3 - Secretary → ME
  • 7
    RIO TINTO BRAZILIAN INVESTMENTS LIMITED
    - now 04986798
    SUMMERVANISH LIMITED - 2004-01-21
    6 St James's Square, London
    Dissolved Corporate (23 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 2 - Secretary → ME
  • 8
    RIO TINTO CHARTERS LIMITED
    05401094
    6 St James's Square, London, United Kingdom
    Dissolved Corporate (20 parents)
    Officer
    2014-12-12 ~ dissolved
    IIF 21 - Secretary → ME
  • 9
    RIO TINTO DIAMONDS LIMITED
    05266164
    6 St James's Square, London
    Dissolved Corporate (43 parents)
    Officer
    2013-04-24 ~ 2017-05-05
    IIF 31 - Secretary → ME
  • 10
    RIO TINTO ENERGY LIMITED
    - now 05699397
    ADAMARA LIMITED - 2013-07-05
    RIO TINTO ENERGY LIMITED - 2013-05-29
    JAKHAU HOLDINGS LIMITED - 2006-11-28
    6 St James's Square, London, United Kingdom
    Active Corporate (22 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 32 - Secretary → ME
  • 11
    RIO TINTO EUROPEAN HOLDINGS LIMITED
    - now 00993068
    RTZ EUROPEAN HOLDINGS LIMITED - 1997-06-12
    R.T.Z.BRITAIN FINANCE LIMITED - 1987-05-06
    6 St James's Square, London
    Active Corporate (35 parents, 8 offsprings)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 19 - Secretary → ME
  • 12
    RIO TINTO EXPLORATION DRC ORIENTALE LIMITED
    - now 06910289
    RIO TINTO EXPLORATION DRC ORIENTAL LIMITED - 2010-06-10
    RIO TINTO COPPER STRATEGIC ALLIANCE LIMITED - 2009-06-23
    6 St James's Square, London
    Dissolved Corporate (15 parents)
    Officer
    2014-12-12 ~ dissolved
    IIF 39 - Secretary → ME
  • 13
    RIO TINTO FH LIMITED
    - now 00339168
    RIO TINTO FINANCE HOLDINGS LIMITED - 2013-08-20
    RIO TINTO CANADIAN HOLDINGS LIMITED - 2003-04-02
    R.T.Z. CANADIAN HOLDINGS LIMITED - 1997-06-23
    6 St James's Square, London
    Dissolved Corporate (28 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 27 - Secretary → ME
  • 14
    RIO TINTO FINANCE (USA) PLC
    - now 06287014
    RIO TINTO (COMMERCIAL PAPER) PLC - 2012-03-05
    6 St James's Square, London
    Active Corporate (28 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 15 - Secretary → ME
  • 15
    RIO TINTO FINANCE PLC
    - now 00358901 06674343... (more)
    RTZ FINANCE PLC - 1997-06-12
    6 St James's Square, London
    Active Corporate (35 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 4 - Secretary → ME
  • 16
    RIO TINTO INDONESIAN HOLDINGS LIMITED
    - now 03074852
    RTZ INDONESIAN HOLDINGS LIMITED - 1997-06-23
    6 St James's Square, London
    Active Corporate (34 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 9 - Secretary → ME
  • 17
    RIO TINTO INTERNATIONAL HOLDINGS LIMITED
    - now 00425864
    R.T.Z. INTERNATIONAL HOLDINGS LIMITED - 1997-06-12
    BARRIER CORPORATION LIMITED (THE) - 1978-12-31
    6 St James's Square, London, United Kingdom
    Active Corporate (36 parents, 33 offsprings)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 16 - Secretary → ME
  • 18
    RIO TINTO INVESTMENTS LIMITED
    - now 00359652
    SELTRUST INVESTMENTS,LIMITED - 1989-07-21
    6 St James's Square, London
    Dissolved Corporate (31 parents)
    Officer
    2014-12-12 ~ dissolved
    IIF 24 - Secretary → ME
  • 19
    RIO TINTO IRON & TITANIUM LIMITED
    - now 02796146
    QMP METAL POWDERS LIMITED - 2006-07-11
    BROADSTAND LIMITED - 1993-11-08
    6 St James's Square, London, United Kingdom
    Dissolved Corporate (35 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 22 - Secretary → ME
  • 20
    RIO TINTO IRON ORE ATLANTIC LIMITED
    05516177
    6 St James's Square, London
    Active Corporate (30 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 10 - Secretary → ME
  • 21
    RIO TINTO IRON ORE TRADING CHINA LIMITED
    08651526
    6 St James's Square, London
    Active Corporate (13 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 40 - Secretary → ME
  • 22
    RIO TINTO LONDON LIMITED
    - now 00460473
    RTZ LIMITED - 1997-05-30
    R.T.Z.SERVICES LIMITED - 1986-01-01
    6 St James's Square, London, United Kingdom
    Active Corporate (42 parents, 4 offsprings)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 41 - Secretary → ME
  • 23
    RIO TINTO MARKETING SERVICES LIMITED
    - now 03075230
    RIO TINTO RESOURCE DEVELOPMENT LIMITED - 1999-11-18
    RTZ RESOURCE DEVELOPMENT LIMITED - 1997-06-02
    6 St James's Square, London
    Dissolved Corporate (32 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 38 - Secretary → ME
  • 24
    RIO TINTO MEDICAL PLAN TRUSTEES LIMITED
    - now 03230372
    R.T.Z. MEDICAL PLAN TRUSTEES LIMITED - 1997-09-01
    HACKREMCO (NO.1161) LIMITED - 1996-09-10
    6 St James's Square, London
    Active Corporate (26 parents)
    Officer
    2008-06-02 ~ 2017-05-05
    IIF 43 - Secretary → ME
  • 25
    RIO TINTO METALS LIMITED
    - now 00147115
    R.T.Z. METALS LIMITED - 1997-06-12
    R.T.Z. BRISTOL LIMITED - 1983-12-01
    IMPERIAL SMELTING CORPORATION(N.S.C.)LIMITED - 1981-12-31
    6 St James's Square, London
    Active Corporate (36 parents, 3 offsprings)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 29 - Secretary → ME
  • 26
    RIO TINTO MINERALS DEVELOPMENT LIMITED
    - now 00281218
    BP MINERALS DEVELOPMENT LIMITED - 1989-07-12
    BP MINERALS INTERNATIONAL LIMITED - 1988-07-07
    SELECTION TRUST LIMITED - 1982-08-16
    6 St James's Square, London
    Active Corporate (47 parents, 1 offspring)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 33 - Secretary → ME
  • 27
    RIO TINTO MINING AND EXPLORATION LIMITED
    - now 01305702
    RTZ MINING AND EXPLORATION LIMITED - 1997-06-25
    DELABOLE SLATE LIMITED - 1988-10-14
    PERSKIP LIMITED - 1981-12-31
    6 St James's Square, London
    Active Corporate (47 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 35 - Secretary → ME
  • 28
    RIO TINTO NOMINEES LIMITED
    - now 01181093
    R.T.Z. NOMINEES LIMITED - 1997-06-05
    6 St James's Square, London, United Kingdom
    Active Corporate (34 parents)
    Officer
    2012-02-15 ~ 2017-05-05
    IIF 20 - Secretary → ME
  • 29
    RIO TINTO OT MANAGEMENT LIMITED
    09247092
    6 St James's Square, London
    Active Corporate (16 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 17 - Secretary → ME
  • 30
    RIO TINTO OVERSEAS HOLDINGS LIMITED
    - now 00280423
    R.T.Z.OVERSEAS HOLDINGS LIMITED - 1997-06-12
    6 St James's Square, London
    Active Corporate (34 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 28 - Secretary → ME
  • 31
    RIO TINTO PENSION 2009 TRUSTEES LIMITED
    06890898
    6 St James's Square, London
    Dissolved Corporate (19 parents)
    Officer
    2010-06-23 ~ 2011-01-27
    IIF 1 - Secretary → ME
    2012-10-11 ~ 2017-05-05
    IIF 25 - Secretary → ME
  • 32
    RIO TINTO PENSION FUND TRUSTEES LIMITED
    - now 00982701
    R.T.Z. PENSION FUND TRUSTEES LIMITED - 1997-06-12
    6 St James's Square, London
    Active Corporate (46 parents)
    Officer
    2008-09-08 ~ 2017-05-05
    IIF 42 - Secretary → ME
    Person with significant control
    2016-07-05 ~ 2018-12-31
    IIF 46 - Ownership of shares – More than 25% but not more than 50% OE
    IIF 46 - Ownership of voting rights - More than 25% but not more than 50% OE
  • 33
    RIO TINTO PENSION INVESTMENTS LIMITED
    - now 01776943
    R.T.Z. PENSION INVESTMENTS LIMITED - 1997-06-25
    6 St James's Square, London
    Dissolved Corporate (33 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 18 - Secretary → ME
  • 34
    RIO TINTO SEVERO ZAPAD LIMITED
    05111539
    6 St James's Square, London, United Kingdom
    Dissolved Corporate (16 parents)
    Officer
    2014-12-12 ~ dissolved
    IIF 7 - Secretary → ME
  • 35
    RIO TINTO SHIPPING LIMITED
    05269341
    6 St James's Square, London, United Kingdom
    Dissolved Corporate (21 parents)
    Officer
    2014-12-12 ~ dissolved
    IIF 12 - Secretary → ME
  • 36
    RIO TINTO SIMFER UK LIMITED
    - now 06375648
    FRONTIER GREEN RESOURCES LIMITED - 2010-08-20
    6 St James's Square, London
    Active Corporate (26 parents, 2 offsprings)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 13 - Secretary → ME
  • 37
    RIO TINTO SOUTH EAST ASIA LIMITED
    03699290
    6 St James's Square, London
    Active Corporate (34 parents, 1 offspring)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 8 - Secretary → ME
  • 38
    RIO TINTO SULAWESI HOLDINGS LIMITED
    07451623
    6 St James's Square, London
    Active Corporate (15 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 14 - Secretary → ME
  • 39
    RIO TINTO TECHNOLOGICAL RESOURCES UK LIMITED
    - now 08270236
    RIO TINTO TECHNOLOGY RESOURCES UK LIMITED - 2012-10-29
    6 St James's Square, London
    Active Corporate (15 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 11 - Secretary → ME
  • 40
    RIO TINTO URANIUM LIMITED
    - now 02523945 05548486... (more)
    RIO TINTO MINERAL SERVICES LIMITED - 2011-10-03
    RTZ MINERAL SERVICES LIMITED - 1997-06-09
    HACKREMCO (NO.609) LIMITED - 1990-10-18
    6 St James's Square, London
    Dissolved Corporate (31 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 6 - Secretary → ME
  • 41
    RIO TINTO URANIUM SERVICES LIMITED
    - now 05548486 02523945
    RIO TINTO URANIUM LIMITED - 2011-10-03
    6 St James's Square, London
    Dissolved Corporate (23 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 34 - Secretary → ME
  • 42
    RIO TINTO VOSTOK LIMITED
    - now 05524741
    RIO TINTO KALI LIMITED - 2005-11-02
    6 St James's Square, London
    Dissolved Corporate (22 parents)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 26 - Secretary → ME
  • 43
    RIO TINTO WESTERN HOLDINGS LIMITED
    - now 00007132
    RTZ WESTERN HOLDINGS LIMITED - 1997-06-12
    R.T.Z. UNITED KINGDOM HOLDINGS LIMITED - 1990-11-30
    R.T.Z. INVESTMENTS LIMITED - 1978-12-31
    6 St James's Square, London, United Kingdom
    Active Corporate (34 parents, 4 offsprings)
    Officer
    2014-12-12 ~ 2017-05-05
    IIF 30 - Secretary → ME
  • 44
    ST JOHN COURT MANAGEMENT COMPANY LIMITED
    04469490
    C/o Aspire Block And Estate Management Limited The Wenta Business Centre, Colne Way, Watford, England
    Active Corporate (16 parents)
    Officer
    2002-10-14 ~ 2003-12-12
    IIF 44 - Director → ME

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Contains public sector information retrieved at 9 February 2026 and licensed under the Open Government Licence v3.0.