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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

Hardouin, Guillaume Laurent

    Related profiles found in government register
  • Hardouin, Guillaume Laurent
    French engineer born in January 1978

    Resident in England

    Registered addresses and corresponding companies
    • 10, Clonmore Street, London, SW18 5EX, United Kingdom

      IIF 1 IIF 2
  • Hardouin, Guillaume Laurent
    French born in January 1978

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • C/o Cantelowes Limited, 1 Royal Exchange Avenue, London, EC3V 3LT, United Kingdom

      IIF 3
  • Hardouin, Guillaume Laurent
    French engineering consultant born in January 1978

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 175b, Replingham Road, London, SW18 5LY, England

      IIF 4
  • Mr Guillaume Laurent Hardouin
    French born in January 1978

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 1 Royal Exchange Avenue, London, EC3V 3LT, England

      IIF 5
    • First Floor Flat, 175b Replingham Road, London, SW18 5LY, England

      IIF 6
child relation
Offspring entities and appointments 3
  • 1
    PLANTINUM ENGINEERING LIMITED
    09062551
    15 Bowling Green Lane, London, England
    Dissolved Corporate (2 parents)
    Officer
    2014-05-29 ~ 2014-10-01
    IIF 2 - Director → ME
  • 2
    PLATINUM ENGINEERING CONSULTING LTD
    09068121
    3 The Courtyard Harris Business Park, Hanbury Road, Stoke Prior, Bromsgrove
    Dissolved Corporate (3 parents)
    Officer
    2014-06-03 ~ 2014-09-22
    IIF 1 - Director → ME
    2014-06-03 ~ dissolved
    IIF 4 - Director → ME
    Person with significant control
    2016-07-01 ~ dissolved
    IIF 6 - Right to appoint or remove directors OE
    IIF 6 - Ownership of shares – More than 25% but not more than 50% OE
    IIF 6 - Ownership of voting rights - More than 25% but not more than 50% OE
  • 3
    PLATINUM OFFSHORE ENGINEERING LIMITED
    16581363
    C/o Cantelowes Limited, 1 Royal Exchange Avenue, London, United Kingdom
    Active Corporate (1 parent)
    Officer
    2025-07-14 ~ now
    IIF 3 - Director → ME
    Person with significant control
    2025-07-14 ~ now
    IIF 5 - Ownership of shares – 75% or more OE
    IIF 5 - Right to appoint or remove directors OE
    IIF 5 - Ownership of voting rights - 75% or more OE

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Contains public sector information retrieved at 22 March 2026 and licensed under the Open Government Licence v3.0.