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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

Day, Helen Christine

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 45 - Director → ME
    Person with significant control
    icon of calendar 2019-02-21 ~ dissolved
    IIF 47 - Ownership of voting rights - 75% or more → OE
    IIF 47 - 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 21 - Secretary → ME
  • 3
    RIO TINTO EXPLORATION DRC ORIENTAL LIMITED - 2010-06-10
    RIO TINTO COPPER STRATEGIC ALLIANCE LIMITED - 2009-06-23
    icon of address 6 St James's Square, London
    Dissolved Corporate (3 parents)
    Officer
    icon of calendar 2014-12-12 ~ dissolved
    IIF 39 - 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 24 - 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 7 - 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 12 - Secretary → ME
Ceased 38
  • 1
    RIO TINTO NAMIBIAN HOLDINGS LIMITED - 2019-12-13
    RTZ NAMIBIAN HOLDINGS LIMITED - 1997-06-02
    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 5 - 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 36 - 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 37 - 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 23 - 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 3 - 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 2 - 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 31 - Secretary → ME
  • 8
    RIO TINTO ENERGY LIMITED - 2013-05-29
    JAKHAU HOLDINGS LIMITED - 2006-11-28
    ADAMARA LIMITED - 2013-07-05
    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 32 - 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 19 - Secretary → ME
  • 10
    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
    icon of address 6 St James's Square, London
    Dissolved Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 27 - 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 15 - 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 4 - 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 9 - 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 16 - 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 22 - 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 10 - 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 40 - 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 41 - Secretary → ME
  • 19
    RIO TINTO RESOURCE DEVELOPMENT LIMITED - 1999-11-18
    RTZ RESOURCE DEVELOPMENT LIMITED - 1997-06-02
    icon of address 6 St James's Square, London
    Dissolved Corporate (4 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 38 - 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 43 - Secretary → ME
  • 21
    R.T.Z. BRISTOL LIMITED - 1983-12-01
    IMPERIAL SMELTING CORPORATION(N.S.C.)LIMITED - 1981-12-31
    R.T.Z. METALS LIMITED - 1997-06-12
    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 29 - Secretary → ME
  • 22
    BP MINERALS DEVELOPMENT LIMITED - 1989-07-12
    SELECTION TRUST LIMITED - 1982-08-16
    BP MINERALS INTERNATIONAL LIMITED - 1988-07-07
    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 33 - Secretary → ME
  • 23
    PERSKIP LIMITED - 1981-12-31
    RTZ MINING AND EXPLORATION LIMITED - 1997-06-25
    DELABOLE SLATE LIMITED - 1988-10-14
    icon of address 6 St James's Square, London
    Active Corporate (6 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 35 - 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 20 - 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 17 - 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 28 - 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 25 - Secretary → ME
    icon of calendar 2010-06-23 ~ 2011-01-27
    IIF 1 - 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 42 - Secretary → ME
    Person with significant control
    icon of calendar 2016-07-05 ~ 2018-12-31
    IIF 46 - Ownership of voting rights - More than 25% but not more than 50% → OE
    IIF 46 - Ownership of shares – 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 18 - 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 13 - 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 8 - 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 14 - 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 11 - Secretary → ME
  • 34
    RIO TINTO MINERAL SERVICES LIMITED - 2011-10-03
    RTZ MINERAL SERVICES LIMITED - 1997-06-09
    HACKREMCO (NO.609) LIMITED - 1990-10-18
    icon of address 6 St James's Square, London
    Dissolved Corporate (5 parents)
    Officer
    icon of calendar 2014-12-12 ~ 2017-05-05
    IIF 6 - 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 34 - 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 26 - 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 30 - 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 44 - Director → ME

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Contains public sector information retrieved at 16 October 2025 and licensed under the Open Government Licence v3.0.