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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

Duffy, Catherine

    Related profiles found in government register
  • Duffy, Catherine
    British born in February 1979

    Resident in England

    Registered addresses and corresponding companies
    • Seventh Floor, 70 St Mary Axe, London, EC3A 8BE, United Kingdom

      IIF 1 IIF 2
  • Warbrick, Catherine
    British corporate responsibility director born in February 1979

    Resident in England

    Registered addresses and corresponding companies
    • Costain House, Vanwall Business Park, Maidenhead, Berkshire, SL6 4UB, United Kingdom

      IIF 3
child relation
Offspring entities and appointments 3
  • 1
    COSTAIN ENGINEERING & CONSTRUCTION LIMITED
    - now 02440829
    COSTAIN E & C LIMITED - 1991-08-05
    QUESTEARN LIMITED - 1990-01-10
    Seventh Floor, 70 St Mary Axe, London, United Kingdom
    Active Corporate (39 parents, 14 offsprings)
    Officer
    2023-07-03 ~ now
    IIF 1 - Director → ME
  • 2
    COSTAIN LIMITED
    - now 00610201
    COSTAIN CIVIL ENGINEERING LIMITED - 1999-06-24
    Seventh Floor, 70 St Mary Axe, London, United Kingdom
    Active Corporate (62 parents, 14 offsprings)
    Officer
    2019-09-23 ~ now
    IIF 2 - Director → ME
  • 3
    THE COSTAIN CHARITABLE FOUNDATION
    - now 09062685
    THE COSTAIN FOUNDATION
    - 2014-11-28 09062685
    Costain House, Vanwall Business Park, Maidenhead, Berkshire
    Dissolved Corporate (6 parents)
    Officer
    2014-05-29 ~ dissolved
    IIF 3 - Director → ME

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