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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

Mackenzie, Ian

    Related profiles found in government register
  • Mackenzie, Ian
    British chief executive officer born in April 1957

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • icon of address 16, North Silver Street, Aberdeen, Grampian, AB10 1RL, United Kingdom

      IIF 1
  • Mackenzie, Ian
    British director born in April 1957

    Resident in United Kingdom

    Registered addresses and corresponding companies
child relation
Offspring entities and appointments
Active 1
Ceased 6
  • 1
    HARDY PLC
    - now
    HARDY OIL AND GAS PLC - 2021-02-08
    HARDY OIL & GAS LIMITED - 2005-06-15
    JEHAN ENERGY LIMITED - 2002-01-08
    icon of address Fort Anne, Fort Anne, Douglas, Isle Of Man
    Converted / Closed Corporate (2 parents)
    Officer
    icon of calendar 2012-03-01 ~ 2019-10-18
    IIF 1 - Director → ME
  • 2
    KCA CASPIAN LIMITED - 2003-03-05
    KCA PERSONNEL SERVICES LIMITED - 1997-01-30
    REXRILL LIMITED - 1985-02-20
    icon of address 1 Park Row, Leeds, England
    Active Corporate (4 parents)
    Officer
    icon of calendar 2009-04-30 ~ 2011-08-31
    IIF 5 - Director → ME
  • 3
    KCA DRILLING GROUP LIMITED - 2002-01-03
    THE BLYSTAD GROUP PLC - 1993-01-12
    KCA DRILLING GROUP P.L.C. - 1990-10-15
    icon of address 1 Park Row, Leeds, England
    Active Corporate (4 parents, 7 offsprings)
    Officer
    icon of calendar 2009-01-01 ~ 2011-08-31
    IIF 3 - Director → ME
  • 4
    K C A DRILLING LIMITED - 2002-01-03
    icon of address H&p Bankhead Drive, City South Office Park, Portlethen, Aberdeen, Scotland
    Active Corporate (4 parents, 2 offsprings)
    Officer
    icon of calendar 2009-04-30 ~ 2011-08-31
    IIF 7 - Director → ME
  • 5
    icon of address 1 Park Row, Leeds, England
    Active Corporate (4 parents, 1 offspring)
    Officer
    icon of calendar 2009-04-30 ~ 2011-08-31
    IIF 4 - Director → ME
  • 6
    KCA ENGINEERING LIMITED - 1986-10-28
    icon of address Ernst & Young Llp, 1 More London Place, London
    Dissolved Corporate (3 parents)
    Officer
    icon of calendar 2009-04-30 ~ 2011-08-31
    IIF 6 - Director → ME

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