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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

Mr John Anthony Hargreaves

    Related profiles found in government register
  • Mr John Anthony Hargreaves
    British born in March 1969

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 4 Seabrook Road, Kings Langley, Hertfordshire, WD4 8NU, England

      IIF 1
    • 4, Seabrook Road, Kings Langley, WD4 8NU, United Kingdom

      IIF 2
  • Hargreaves, John Anthony
    British born in March 1969

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 4 Seabrook Road, Kings Langley, Hertfordshire, WD4 8NU, England

      IIF 3
    • 4, Seabrook Road, Kings Langley, WD4 8NU, United Kingdom

      IIF 4
  • Hargreaves, John Anthony
    British it consultant born in March 1969

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 117 Toms Lane, Kings Langley, Hertfordshire, WD4 8NP

      IIF 5
  • Hargreaves, Anthony John
    Brtish accountant born in January 1989

    Resident in England

    Registered addresses and corresponding companies
    • C/o Cox Costello, Langwood House, 63-81 High Street, Rickmansworth, Hertfordshire, WD3 1EQ, England

      IIF 6
child relation
Offspring entities and appointments 4
  • 1
    CALCULUS ACCOUNTING SERVICES LTD
    11489333
    4 Seabrook Road, Kings Langley, United Kingdom
    Active Corporate (2 parents)
    Officer
    2018-07-30 ~ now
    IIF 4 - Director → ME
    Person with significant control
    2018-07-30 ~ now
    IIF 2 - Right to appoint or remove directors OE
    IIF 2 - Ownership of shares – More than 25% but not more than 50% OE
    IIF 2 - Ownership of voting rights - More than 25% but not more than 50% OE
  • 2
    CALCULUS IT & BOOK-KEEPING SERVICES LIMITED
    - now 07888566
    CALCULUS IT & ACCOUNTANCY SERVICES LIMITED
    - 2012-01-06 07888566
    4 Seabrook Road, Kings Langley, Hertfordshire, England
    Active Corporate (3 parents)
    Officer
    2011-12-21 ~ now
    IIF 3 - Director → ME
    Person with significant control
    2016-07-01 ~ now
    IIF 1 - Right to appoint or remove directors OE
    IIF 1 - Ownership of voting rights - More than 25% but not more than 50% OE
    IIF 1 - Ownership of shares – More than 25% but not more than 50% OE
  • 3
    COX COSTELLO & HORNE (SOUTH) LIMITED - now
    COX COSTELLO & HORNE (RICKMANSWORTH) LIMITED
    - 2016-04-27 09475913 09477651... (more)
    C/o Cox Costello & Horne 26 Main Avenue, Moor Park, Northwood, England
    Dissolved Corporate (6 parents)
    Officer
    2015-08-03 ~ 2015-08-03
    IIF 6 - Director → ME
  • 4
    MIDGATE LIMITED
    02975437
    4 Seabrook Road, Kings Langley, Hertfordshire, England
    Dissolved Corporate (4 parents)
    Officer
    1994-10-12 ~ dissolved
    IIF 5 - Director → ME

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