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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

Mcmahon, John Barry, Mr.

    Related profiles found in government register
  • Mcmahon, John Barry, Mr.
    Irish executive born in July 1957

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 15, St. Johns Wood Terrace, London, NW8 6JJ, England

      IIF 1
  • Mcmahon, John Barry, Mr.
    Irish managing director born in July 1957

    Resident in United Kingdom

    Registered addresses and corresponding companies
  • Mcmahon, John Barry, Mr.
    Irish television executive born in July 1957

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 10 Loudoun Road, London, NW8 0LR

      IIF 6
    • 25, Golden Square, London, W1F 9LU

      IIF 7 IIF 8
  • Mcmahon, John Barry
    Irish entertainment executive born in July 1957

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • Sony Pictures Europe House, 25 Golden Square, London, W1F 9LU, England

      IIF 9
  • Mcmahon, John Barry
    Irish American managing director born in July 1957

    Resident in United Kingdom

    Registered addresses and corresponding companies
  • Mcmahon, John Barry
    Irish American television executive born in July 1957

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 12 Hall Road, London, NW8 9PG

      IIF 12
  • John Barry Mcmahon
    Irish born in July 1957

    Resident in England

    Registered addresses and corresponding companies
    • 15, St. Johns Wood Terrace, London, NW8 6JJ, England

      IIF 13
child relation
Offspring entities and appointments
Active 1
  • 1
    15 St. Johns Wood Terrace, London, England
    Dissolved Corporate (2 parents)
    Equity (Company account)
    0 GBP2017-03-31
    Officer
    2013-03-04 ~ dissolved
    IIF 1 - Director → ME
    Person with significant control
    2016-04-06 ~ dissolved
    IIF 13 - Ownership of shares – More than 25% but not more than 50%OE
Ceased 11

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