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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

Calnan, Thomas Alexander Mcmahon

    Related profiles found in government register
  • Calnan, Thomas Alexander Mcmahon
    born in October 1976

    Resident in England

    Registered addresses and corresponding companies
    • icon of address 110 Bishopsgate, London, EC2N 4AY, United Kingdom

      IIF 1
    • icon of address 3, Bunhill Row, London, EC1Y 8YZ

      IIF 2
  • Calnan, Thomas Alexander Mcmahon
    British born in October 1976

    Resident in England

    Registered addresses and corresponding companies
    • icon of address 3, Bunhill Row, London, EC1Y 8YZ

      IIF 3
  • Calnan, Thomas Alexander Mcmahon

    Registered addresses and corresponding companies
    • icon of address 27 King Charles Road, Surbiton, Surrey, KT5 8NY

      IIF 4
  • Calnan, Thomas Alexander Mcmahon
    British solicitor born in October 1976

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • icon of address 338, Hook Road, Chessington, KT9 1NU, England

      IIF 5
child relation
Offspring entities and appointments
Active 2
  • 1
    LONGSTOP COMPANY - 1998-09-01
    icon of address 3 Bunhill Row, London
    Active Corporate (81 parents)
    Officer
    icon of calendar 2021-07-29 ~ now
    IIF 3 - Director → ME
  • 2
    icon of address 3 Bunhill Row, London
    Active Corporate (144 parents, 7 offsprings)
    Officer
    icon of calendar 2021-04-06 ~ now
    IIF 2 - LLP Designated Member → ME
Ceased 2
  • 1
    SIXTH CLAREMONT SHELF COMPANY LIMITED - 1990-08-16
    icon of address 338 Hook Road, Chessington, England
    Active Corporate (4 parents)
    Equity (Company account)
    5,070 GBP2018-08-31
    Officer
    icon of calendar 2014-07-24 ~ 2019-08-01
    IIF 5 - Director → ME
    icon of calendar 2014-07-24 ~ 2019-05-15
    IIF 4 - Secretary → ME
  • 2
    MCDERMOTT WILL & EMERY UK LLP - 2025-08-01
    icon of address 22 Bishopsgate, London, United Kingdom
    Active Corporate (34 parents)
    Officer
    icon of calendar 2018-05-14 ~ 2021-03-31
    IIF 1 - LLP Member → ME

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Contains public sector information retrieved at 12 November 2025 and licensed under the Open Government Licence v3.0.