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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

Heycock, Gwilym Treharne

    Related profiles found in government register
  • Heycock, Gwilym Treharne

    Registered addresses and corresponding companies
    • Park House, Margam, Port Talbot, SA13 2TD, United Kingdom

      IIF 1 IIF 2 IIF 3
    • Park House, Margam, Port Talbot, SA13 2TD, Wales

      IIF 4
  • Mr Gwilym Treharne Heycock
    British born in November 1946

    Resident in Wales

    Registered addresses and corresponding companies
    • Park House, Margam, Port Talbot, SA13 2TD, United Kingdom

      IIF 5 IIF 6
child relation
Offspring entities and appointments 4
  • 1
    NIRIUS CONSULTING LIMITED
    - now 04513702
    ENVIROIL LIMITED - 2004-06-28
    Park House, Margam, Port Talbot, United Kingdom
    Active Corporate (6 parents)
    Officer
    2017-12-31 ~ now
    IIF 3 - Secretary → ME
  • 2
    NIRIUS LIMITED
    04608514
    Park House, Margam, Port Talbot, United Kingdom
    Active Corporate (5 parents)
    Officer
    2017-12-31 ~ now
    IIF 1 - Secretary → ME
    Person with significant control
    2019-09-27 ~ 2022-11-16
    IIF 6 - Ownership of shares – 75% or more OE
  • 3
    NIRIUS NETWORKS LIMITED
    06307729
    Park House, Margam, Port Talbot, United Kingdom
    Active Corporate (3 parents)
    Officer
    2017-12-31 ~ now
    IIF 2 - Secretary → ME
    Person with significant control
    2019-09-27 ~ 2022-11-16
    IIF 5 - Right to appoint or remove directors OE
    IIF 5 - Ownership of shares – 75% or more OE
    IIF 5 - Ownership of voting rights - 75% or more OE
  • 4
    THE HEYCOCK FOUNDATION
    05927057
    Park House, Margam, Port Talbot, Wales
    Active Corporate (3 parents)
    Officer
    2017-12-31 ~ now
    IIF 4 - Secretary → ME

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Contains public sector information retrieved at 5 April 2026 and licensed under the Open Government Licence v3.0.