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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

Mcdonald, Susan Rebecca

    Related profiles found in government register
  • Mcdonald, Susan Rebecca
    American born in December 1955

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 12, Conduit Street, London, W1S 2XH, England

      IIF 1 IIF 2
  • Mcdonald, Susan Rebecca
    American director born in December 1955

    Resident in United Kingdom

    Registered addresses and corresponding companies
  • Mcdonald, Susan Rebecca
    British born in December 1955

    Resident in England

    Registered addresses and corresponding companies
    • 12, Conduit Street, London, W1S 2XH, England

      IIF 8
  • Mcdonald, Susan Rebecca
    British chairman calculus capital born in December 1955

    Resident in England

    Registered addresses and corresponding companies
    • 104, Park Street, London, W1K 6NF, England

      IIF 9
  • Mcdonald, Susan Rebecca
    British non executive director born in December 1955

    Resident in England

    Registered addresses and corresponding companies
    • 66-67, Sun Court, Cornhill, London, EC3V 3NB, United Kingdom

      IIF 10
  • Mcdonald, Susan Rebecca
    United States chairman born in December 1955

    Resident in Great Britain

    Registered addresses and corresponding companies
    • 47 Chepstow Place, London, W2 4TS

      IIF 11
  • Macdonald, Susan
    British chairman calculus capital born in December 1955

    Resident in England

    Registered addresses and corresponding companies
    • 104, Park Street, London, W1K 6NF, England

      IIF 12
  • Mrs Susan Rebecca Mcdonald
    British born in December 1955

    Resident in England

    Registered addresses and corresponding companies
    • 12, Conduit Street, London, W1S 2XH, England

      IIF 13
child relation
Offspring entities and appointments
Active 2
  • 1
    MCDONALD GLENCROSS LIMITED - 2005-03-29 04321288, 03487328
    MCDONALD-GLENCROSS LIMITED - 2004-12-23 04321288, 03487328
    12 Conduit Street, London, England
    Active Corporate (4 parents, 5 offsprings)
    Equity (Company account)
    5,608,926 GBP2024-10-31
    Officer
    1999-10-19 ~ now
    IIF 2 - Director → ME
  • 2
    CALCULUS HOLDINGS LIMITED - 2025-07-30
    12 Conduit Street, London, England
    Active Corporate (3 parents, 2 offsprings)
    Officer
    2008-03-26 ~ now
    IIF 1 - Director → ME
    Person with significant control
    2016-04-06 ~ now
    IIF 13 - Ownership of shares – More than 25% but not more than 50%OE
    IIF 13 - Ownership of voting rights - More than 25% but not more than 50%OE
Ceased 9
  • 1
    IS E&P LIMITED - 2011-09-27
    INFRASTRATA TRADING LIMITED - 2010-12-13
    PORTLAND ENERGY LIMITED - 2009-07-09
    5th Floor Grove House, 248a Marylebone Road, London
    Dissolved Corporate (3 parents)
    Total Assets Less Current Liabilities (Company account)
    225,946 GBP2016-07-31
    Officer
    2011-03-31 ~ 2015-07-20
    IIF 12 - Director → ME
  • 2
    12 Conduit Street, London, England
    Active Corporate (3 parents, 2 offsprings)
    Equity (Company account)
    2 GBP2024-10-31
    Officer
    2001-06-27 ~ 2023-04-28
    IIF 6 - Director → ME
  • 3
    12 Conduit Street, London, England
    Active Corporate (3 parents)
    Equity (Company account)
    1 GBP2024-10-31
    Officer
    2001-11-12 ~ 2023-04-28
    IIF 7 - Director → ME
  • 4
    CALMEDIA ENTERTAINMENT LIMITED - 2024-07-17
    CALCULUS ADVISORY LIMITED - 2024-06-03
    12 Conduit Street, London, England
    Active Corporate (3 parents)
    Equity (Company account)
    2 GBP2022-10-31
    Officer
    2009-04-27 ~ 2023-04-26
    IIF 4 - Director → ME
    2024-07-04 ~ 2025-11-10
    IIF 8 - Director → ME
  • 5
    MGL NOMINEES LIMITED - 2005-03-29
    12 Conduit Street, London, England
    Active Corporate (4 parents, 1 offspring)
    Equity (Company account)
    2 GBP2024-10-31
    Officer
    2001-11-22 ~ 2023-04-28
    IIF 5 - Director → ME
  • 6
    DRYDEN HUMAN CAPITAL GROUP LIMITED - 2019-03-28
    Warnford Court, 29 Throgmorton Street, London, England
    Active Corporate (2 parents, 4 offsprings)
    Equity (Company account)
    2,946,851 GBP2021-03-31
    Officer
    2011-04-28 ~ 2017-01-06
    IIF 10 - Director → ME
  • 7
    EPISTEM LIMITED - 2018-06-12 11031998
    The Incubator Building, Grafton Street, Manchester
    Active Corporate (3 parents, 1 offspring)
    Officer
    2000-09-21 ~ 2005-06-30
    IIF 11 - Director → ME
  • 8
    CALCULUS EQUITY PARTNERS LIMITED - 2005-03-29
    12 Conduit Street, London, England
    Active Corporate (3 parents)
    Equity (Company account)
    1 GBP2024-10-31
    Officer
    2001-11-12 ~ 2023-04-28
    IIF 3 - Director → ME
  • 9
    CORFE ENERGY LIMITED - 2023-08-13
    IS NV LIMITED - 2011-09-27
    INFRASTRATA NV LIMITED - 2011-02-07
    INFRASTRATA LIMITED - 2009-12-15 06409712
    PORTLAND GAS NV LIMITED - 2009-07-16
    57a Broadway, Leigh-on-sea, Essex, England
    Active Corporate (3 parents)
    Equity (Company account)
    -2,211,529 GBP2024-12-31
    Officer
    2011-03-31 ~ 2015-07-20
    IIF 9 - Director → ME

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