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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

Sheahan, Mark

    Related profiles found in government register
  • Sheahan, Mark
    English born in August 1955

    Resident in England

    Registered addresses and corresponding companies
    • 21 Tressillian Crescent, London, SE4 1QJ

      IIF 1 IIF 2
  • Sheahan, Mark
    English company director born in August 1955

    Resident in England

    Registered addresses and corresponding companies
    • 21, Tressillian Crescent, Brockley, London, SE4 1QJ, England

      IIF 3
  • Sheahan, Mark
    English inventor born in August 1955

    Resident in England

    Registered addresses and corresponding companies
    • 21, Tressillian Crescent, London, SE4 1QJ, United Kingdom

      IIF 4
  • Mr Mark Sheahan
    English born in August 1955

    Resident in England

    Registered addresses and corresponding companies
    • 21, Tressillian Crescent, Brockley, London, SE4 1QJ, England

      IIF 5
    • 21, Tressillian Crescent, Brockley, London, SE4 1QJ, United Kingdom

      IIF 6
    • 21, Tressillian Crescent, London, SE4 1QJ, England

      IIF 7
child relation
Offspring entities and appointments 4
  • 1
    COMPGEN LIMITED
    - now 02321591
    REALTUNE LIMITED
    - 1992-09-15 02321591
    21 Tressillian Crescent, Brockley, London
    Active Corporate (4 parents)
    Officer
    (before 1992-11-25) ~ now
    IIF 1 - Director → ME
    Person with significant control
    2016-06-20 ~ now
    IIF 7 - Ownership of shares – 75% or more OE
  • 2
    CULGEN LIMITED
    09468036
    21 Tressillian Crescent, London, United Kingdom
    Dissolved Corporate (1 parent)
    Officer
    2015-03-03 ~ dissolved
    IIF 4 - Director → ME
    Person with significant control
    2016-04-06 ~ dissolved
    IIF 5 - Ownership of shares – 75% or more OE
  • 3
    GROWERS IRRIGATION LTD
    07779713
    21 Tressillian Crescent, Brockley, London, England
    Dissolved Corporate (2 parents)
    Officer
    2011-09-20 ~ dissolved
    IIF 3 - Director → ME
  • 4
    INSTITUTE OF PATENTEES & INVENTORS
    00170887
    No. 77, Beaconsfield Road, London
    Active Corporate (39 parents)
    Officer
    2002-10-24 ~ now
    IIF 2 - Director → ME
    Person with significant control
    2016-04-06 ~ now
    IIF 6 - Has significant influence or control as a member of a firm OE
    IIF 6 - Has significant influence or control OE

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