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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 Frederick Harmer

    Related profiles found in government register
  • Mr John Frederick Harmer
    British born in June 1966

    Resident in England

    Registered addresses and corresponding companies
    • 3 Water Furlongs, Purton Road, Cricklade, Swindon, SN6 6JA, England

      IIF 1
  • Harmer, John Frederick
    British born in June 1966

    Resident in England

    Registered addresses and corresponding companies
    • 3 Water Furlongs, Purton Road, Cricklade, Swindon, SN6 6JA, England

      IIF 2
    • 3 Water Furlongs, Purton Road, Cricklade, Swindon, Wiltshire, SN6 6JA, United Kingdom

      IIF 3
  • Harmer, John Frederick
    British energy consultant born in June 1966

    Resident in England

    Registered addresses and corresponding companies
    • 42, North Place, Teddington, Middlesex, TW11 0HN

      IIF 4 IIF 5
child relation
Offspring entities and appointments 4
  • 1
    DIAMOND ENERGY LIMITED
    06030760
    3 Water Furlongs Purton Road, Cricklade, Swindon, England
    Active Corporate (5 parents)
    Officer
    2006-12-18 ~ now
    IIF 2 - Director → ME
    Person with significant control
    2016-04-06 ~ now
    IIF 1 - Ownership of shares – 75% or more OE
    IIF 1 - Right to appoint or remove directors OE
    IIF 1 - Ownership of voting rights - 75% or more OE
  • 2
    GAIA POWER CARRINGTON LIMITED
    - now 06930127
    HALLCO 1708 LIMITED
    - 2009-12-23 06930127 06931054... (more)
    71a High Street, Yarm, Tees Valley, England
    Dissolved Corporate (8 parents)
    Officer
    2009-09-08 ~ 2010-06-01
    IIF 4 - Director → ME
  • 3
    GAIA POWER LIMITED
    - now 06539422
    HALLCO 1602 LIMITED - 2008-05-08
    2nd Floor 110 Cannon Street, London
    Dissolved Corporate (8 parents)
    Officer
    2009-03-09 ~ 2011-09-06
    IIF 5 - Director → ME
  • 4
    GAIA POWER TEES VALLEY LIMITED
    - now 06849142
    GAIA TEES VALLEY LIMITED - 2009-06-27
    HALLCO 1680 LIMITED - 2009-05-14
    45 Ernest Grove, Beckenham, Kent, England
    Active Corporate (8 parents)
    Officer
    2009-07-06 ~ 2023-02-21
    IIF 3 - Director → ME

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Contains public sector information retrieved at 22 March 2026 and licensed under the Open Government Licence v3.0.