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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

Hall, Derek Sidney

    Related profiles found in government register
  • Hall, Derek Sidney
    British director - taxation born in December 1939

    Registered addresses and corresponding companies
    • icon of address 25 Bishops Way, Four Oaks, Sutton Coldfield, West Midlands, B74 4XU

      IIF 1
  • Hall, Derek Sidney
    British director taxation born in December 1939

    Registered addresses and corresponding companies
child relation
Offspring entities and appointments
Active 1
  • 1
    AT & T ISTEL LIMITED - 1996-02-22
    icon of address Room 206 Fountain House, Donegall Place, Belfast
    Converted / Closed Corporate (4 parents)
    Officer
    icon of calendar 1993-09-21 ~ now
    IIF 1 - Director → ME
Ceased 4
  • 1
    icon of address Highfield House, Headless Cross Drive, Redditch, Worcestershire
    Dissolved Corporate (2 parents)
    Officer
    icon of calendar 1997-06-26 ~ 2000-04-07
    IIF 2 - Director → ME
  • 2
    icon of address Studley Point, Birmingham Road, Studley, Warwickshire, England
    Active Corporate (4 parents, 1 offspring)
    Officer
    icon of calendar 1998-10-01 ~ 2000-04-07
    IIF 3 - Director → ME
  • 3
    AVAYA UK
    - now
    FARTHINGSPRING LIMITED - 1995-12-15
    LUCENT TECHNOLOGIES UK LIMITED - 2000-07-10
    AT&T SYSTEMS & TECHNOLOGY (UK) LTD. - 1996-02-06
    icon of address 45 Gresham Street, London, England
    Active Corporate (5 parents, 4 offsprings)
    Officer
    icon of calendar 1995-12-14 ~ 1996-06-30
    IIF 5 - Director → ME
  • 4
    AT&T EASYLINK SERVICES LIMITED - 2001-04-13
    AT&T EASYLINK SERVICES (UK) LIMITED - 1999-07-13
    INGLEBY (1177) LIMITED - 1999-04-23
    icon of address 55 Baker Street, London
    Dissolved Corporate (3 parents)
    Officer
    icon of calendar 2000-01-14 ~ 2000-04-07
    IIF 4 - Director → ME

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Contains public sector information retrieved at 26 August 2025 and licensed under the Open Government Licence v3.0.