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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.

Parent entities and officers
Inapplicable
parent relation
Individuals in focus

Ms Helen Christine Day

child relation
Offspring entities and appointments
Active 6
  • 1
    icon of address 840 Ibis Court Centre Park, Warrington, England
    Dissolved Corporate (1 parent)
    Officer
    icon of calendar 2019-02-21 ~ dissolved
    IIF 3 - Director → ME
    Person with significant control
    icon of calendar 2019-02-21 ~ dissolved
    IIF 2 - Ownership of voting rights - 75% or more → OE
    IIF 2 - Ownership of shares – 75% or more → OE
  • 2
    icon of address 6 St James's Square, London, United Kingdom
    Dissolved Corporate (3 parents)
    Officer
    icon of calendar 2014-12-12 ~ dissolved
    IIF 27 - Secretary → ME
  • 3
    RIO TINTO COPPER STRATEGIC ALLIANCE LIMITED - 2009-06-23
    RIO TINTO EXPLORATION DRC ORIENTAL LIMITED - 2010-06-10
    icon of address 6 St James's Square, London
    Dissolved Corporate (3 parents)
    Officer
    icon of calendar 2014-12-12 ~ dissolved
    IIF 45 - Secretary → ME
  • 4
    SELTRUST INVESTMENTS,LIMITED - 1989-07-21
    icon of address 6 St James's Square, London
    Dissolved Corporate (3 parents)
    Officer
    icon of calendar 2014-12-12 ~ dissolved
    IIF 30 - Secretary → ME
  • 5
    icon of address 6 St James's Square, London, United Kingdom
    Dissolved Corporate (3 parents)
    Officer
    icon of calendar 2014-12-12 ~ dissolved
    IIF 13 - Secretary → ME
  • 6
    icon of address 6 St James's Square, London, United Kingdom
    Dissolved Corporate (3 parents)
    Officer
    icon of calendar 2014-12-12 ~ dissolved
    IIF 18 - Secretary → ME
Ceased 38
  • 1
    RTZ NAMIBIAN HOLDINGS LIMITED - 1997-06-02
    RIO TINTO NAMIBIAN HOLDINGS LIMITED - 2019-12-13
    icon of address Unit 794 Salisbury House 29 Finsbury Circus, London, United Kingdom
    Active Corporate (5 parents)
    Equity (Company account)
    Retained earnings (accumulated losses)
    16,567 USD2024-12-30
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 11 - Secretary → ME
  • 2
    RIO TINTO PERU LIMITED - 2023-08-25
    icon of address 4th Floor The Charlotte Building, 17 Gresse Street, London, United Kingdom
    Active Corporate (7 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 42 - Secretary → ME
  • 3
    R.T.Z. AUSTRALIA HOLDINGS LIMITED - 1997-06-23
    icon of address 6 St James's Square, London
    Active Corporate (5 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 43 - Secretary → ME
  • 4
    ORLINPOINT LIMITED - 2012-03-20
    icon of address 6 St James's Square, London
    Active Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 29 - Secretary → ME
  • 5
    SUMMERWAND LIMITED - 2004-02-03
    icon of address 6 St James's Square, London
    Dissolved Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 9 - Secretary → ME
  • 6
    SUMMERVANISH LIMITED - 2004-01-21
    icon of address 6 St James's Square, London
    Dissolved Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 8 - Secretary → ME
  • 7
    icon of address 6 St James's Square, London
    Dissolved Corporate (5 parents)
    Officer
    icon of calendar 2013-04-24 ~ 2017-05-05
    IIF 37 - Secretary → ME
  • 8
    JAKHAU HOLDINGS LIMITED - 2006-11-28
    ADAMARA LIMITED - 2013-07-05
    RIO TINTO ENERGY LIMITED - 2013-05-29
    icon of address 6 St James's Square, London, United Kingdom
    Active Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 38 - Secretary → ME
  • 9
    R.T.Z.BRITAIN FINANCE LIMITED - 1987-05-06
    RTZ EUROPEAN HOLDINGS LIMITED - 1997-06-12
    icon of address 6 St James's Square, London
    Active Corporate (6 parents, 8 offsprings)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 25 - Secretary → ME
  • 10
    RIO TINTO CANADIAN HOLDINGS LIMITED - 2003-04-02
    RIO TINTO FINANCE HOLDINGS LIMITED - 2013-08-20
    R.T.Z. CANADIAN HOLDINGS LIMITED - 1997-06-23
    icon of address 6 St James's Square, London
    Dissolved Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 33 - Secretary → ME
  • 11
    RIO TINTO (COMMERCIAL PAPER) PLC - 2012-03-05
    icon of address 6 St James's Square, London
    Active Corporate (6 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 21 - Secretary → ME
  • 12
    RTZ FINANCE PLC - 1997-06-12
    icon of address 6 St James's Square, London
    Active Corporate (6 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 10 - Secretary → ME
  • 13
    RTZ INDONESIAN HOLDINGS LIMITED - 1997-06-23
    icon of address 6 St James's Square, London
    Active Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 15 - Secretary → ME
  • 14
    BARRIER CORPORATION LIMITED (THE) - 1978-12-31
    R.T.Z. INTERNATIONAL HOLDINGS LIMITED - 1997-06-12
    icon of address 6 St James's Square, London, United Kingdom
    Active Corporate (6 parents, 31 offsprings)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 22 - Secretary → ME
  • 15
    BROADSTAND LIMITED - 1993-11-08
    QMP METAL POWDERS LIMITED - 2006-07-11
    icon of address 6 St James's Square, London, United Kingdom
    Dissolved Corporate (5 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 28 - Secretary → ME
  • 16
    icon of address 6 St James's Square, London
    Active Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 16 - Secretary → ME
  • 17
    icon of address 6 St James's Square, London
    Active Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 46 - Secretary → ME
  • 18
    RTZ LIMITED - 1997-05-30
    R.T.Z.SERVICES LIMITED - 1986-01-01
    icon of address 6 St James's Square, London, United Kingdom
    Active Corporate (6 parents, 4 offsprings)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 47 - Secretary → ME
  • 19
    RTZ RESOURCE DEVELOPMENT LIMITED - 1997-06-02
    RIO TINTO RESOURCE DEVELOPMENT LIMITED - 1999-11-18
    icon of address 6 St James's Square, London
    Dissolved Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 44 - Secretary → ME
  • 20
    R.T.Z. MEDICAL PLAN TRUSTEES LIMITED - 1997-09-01
    HACKREMCO (NO.1161) LIMITED - 1996-09-10
    icon of address 6 St James's Square, London
    Active Corporate (4 parents)
    Officer
    icon of calendar 2008-06-02 ~ 2017-05-05
    IIF 6 - Secretary → ME
  • 21
    R.T.Z. BRISTOL LIMITED - 1983-12-01
    R.T.Z. METALS LIMITED - 1997-06-12
    IMPERIAL SMELTING CORPORATION(N.S.C.)LIMITED - 1981-12-31
    icon of address 6 St James's Square, London
    Active Corporate (5 parents, 3 offsprings)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 35 - Secretary → ME
  • 22
    BP MINERALS INTERNATIONAL LIMITED - 1988-07-07
    BP MINERALS DEVELOPMENT LIMITED - 1989-07-12
    SELECTION TRUST LIMITED - 1982-08-16
    icon of address 6 St James's Square, London
    Active Corporate (5 parents, 1 offspring)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 39 - Secretary → ME
  • 23
    DELABOLE SLATE LIMITED - 1988-10-14
    PERSKIP LIMITED - 1981-12-31
    RTZ MINING AND EXPLORATION LIMITED - 1997-06-25
    icon of address 6 St James's Square, London
    Active Corporate (6 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 41 - Secretary → ME
  • 24
    R.T.Z. NOMINEES LIMITED - 1997-06-05
    icon of address 6 St James's Square, London, United Kingdom
    Active Corporate (5 parents)
    Officer
    icon of calendar 2012-02-15 ~ 2017-05-05
    IIF 26 - Secretary → ME
  • 25
    icon of address 6 St James's Square, London
    Active Corporate (5 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 23 - Secretary → ME
  • 26
    R.T.Z.OVERSEAS HOLDINGS LIMITED - 1997-06-12
    icon of address 6 St James's Square, London
    Active Corporate (5 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 34 - Secretary → ME
  • 27
    icon of address 6 St James's Square, London
    Dissolved Corporate (3 parents)
    Officer
    icon of calendar 2012-10-11 ~ 2017-05-05
    IIF 31 - Secretary → ME
    icon of calendar 2010-06-23 ~ 2011-01-27
    IIF 7 - Secretary → ME
  • 28
    R.T.Z. PENSION FUND TRUSTEES LIMITED - 1997-06-12
    icon of address 6 St James's Square, London
    Active Corporate (7 parents)
    Officer
    icon of calendar 2008-09-08 ~ 2017-05-05
    IIF 5 - Secretary → ME
    Person with significant control
    icon of calendar 2016-07-05 ~ 2018-12-31
    IIF 1 - Ownership of shares – More than 25% but not more than 50% → OE
    IIF 1 - Ownership of voting rights - More than 25% but not more than 50% → OE
  • 29
    R.T.Z. PENSION INVESTMENTS LIMITED - 1997-06-25
    icon of address 6 St James's Square, London
    Dissolved Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 24 - Secretary → ME
  • 30
    FRONTIER GREEN RESOURCES LIMITED - 2010-08-20
    icon of address 6 St James's Square, London
    Active Corporate (4 parents, 2 offsprings)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 19 - Secretary → ME
  • 31
    icon of address 6 St James's Square, London
    Active Corporate (6 parents, 1 offspring)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 14 - Secretary → ME
  • 32
    icon of address 6 St James's Square, London
    Active Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 20 - Secretary → ME
  • 33
    RIO TINTO TECHNOLOGY RESOURCES UK LIMITED - 2012-10-29
    icon of address 6 St James's Square, London
    Active Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 17 - Secretary → ME
  • 34
    RIO TINTO MINERAL SERVICES LIMITED - 2011-10-03
    HACKREMCO (NO.609) LIMITED - 1990-10-18
    RTZ MINERAL SERVICES LIMITED - 1997-06-09
    icon of address 6 St James's Square, London
    Dissolved Corporate (5 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 12 - Secretary → ME
  • 35
    RIO TINTO URANIUM LIMITED - 2011-10-03
    icon of address 6 St James's Square, London
    Dissolved Corporate (6 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 40 - Secretary → ME
  • 36
    RIO TINTO KALI LIMITED - 2005-11-02
    icon of address 6 St James's Square, London
    Dissolved Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 32 - Secretary → ME
  • 37
    R.T.Z. UNITED KINGDOM HOLDINGS LIMITED - 1990-11-30
    R.T.Z. INVESTMENTS LIMITED - 1978-12-31
    RTZ WESTERN HOLDINGS LIMITED - 1997-06-12
    icon of address 6 St James's Square, London, United Kingdom
    Active Corporate (5 parents, 4 offsprings)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 36 - Secretary → ME
  • 38
    icon of address C/o Aspire Block And Estate Management Limited The Wenta Business Centre, Colne Way, Watford, England
    Active Corporate (3 parents)
    Equity (Company account)
    6 GBP2024-03-24
    Officer
    icon of calendar 2002-10-14 ~ 2003-12-12
    IIF 4 - Director → ME

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Contains public sector information retrieved at 12 November 2025 and licensed under the Open Government Licence v3.0.