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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

Jeffery, William Henry

    Related profiles found in government register
  • Jeffery, William Henry
    British head of gas asset management born in September 1970

    Resident in Wales

    Registered addresses and corresponding companies
    • icon of address Windmill Hill Business Park, Whitehill Way, Swindon, Wiltshire, SN5 6PB

      IIF 1 IIF 2
    • icon of address Windmill Hill Business Park, Whitehill Way, Swindon, Wiltshire, SN5 6PB, England

      IIF 3
  • Jeffery, William Henry
    British station manager born in September 1970

    Resident in Wales

    Registered addresses and corresponding companies
    • icon of address Aberthaw Power Station, The Leys, Nr Barry, Vale Of Glamorgan, CF62 4ZW, Wales

      IIF 4
child relation
Offspring entities and appointments
Active 3
  • 1
    RWE GENERATION UK HOLDINGS PLC - 2018-10-22
    HACKPLIMCO (NO.EIGHTY-EIGHT) PUBLIC LIMITED COMPANY - 2000-07-04
    RWE NPOWER HOLDINGS PLC - 2016-09-01
    INNOGY HOLDINGS PLC - 2003-10-01
    RWE INNOGY HOLDINGS PLC - 2004-08-02
    icon of address Windmill Hill Business Park, Whitehill Way, Swindon, Wiltshire
    Active Corporate (5 parents, 19 offsprings)
    Officer
    icon of calendar 2021-04-01 ~ now
    IIF 2 - Director → ME
  • 2
    RWE NPOWER PLC - 2014-07-01
    RWE INNOGY PLC - 2004-08-02
    INNOGY PLC - 2003-10-01
    NPOWER - 2000-07-20
    HACKUNLIMCO (NO.21) - 2000-01-19
    icon of address Windmill Hill Business Park, Whitehill Way, Swindon, Wiltshire
    Active Corporate (5 parents, 9 offsprings)
    Officer
    icon of calendar 2021-04-01 ~ now
    IIF 1 - Director → ME
  • 3
    RWE NPOWER RENEWABLES (TULLIS RUSSELL) LIMITED - 2009-06-30
    FIFE NESS OFFSHORE WIND FARM LIMITED - 2009-05-01
    RWE NPOWER RENEWABLES (MARKINCH) LIMITED - 2014-01-31
    GLACIUS NO.2 LIMITED - 2008-10-13
    RWE INNOGY MARKINCH LIMITED - 2016-05-04
    icon of address Windmill Hill Business Park, Whitehill Way, Swindon, Wiltshire, England
    Active Corporate (5 parents)
    Officer
    icon of calendar 2022-10-07 ~ now
    IIF 3 - Director → ME
Ceased 1
  • 1
    RWE NPOWER RENEWABLES (TULLIS RUSSELL) LIMITED - 2009-06-30
    FIFE NESS OFFSHORE WIND FARM LIMITED - 2009-05-01
    RWE NPOWER RENEWABLES (MARKINCH) LIMITED - 2014-01-31
    GLACIUS NO.2 LIMITED - 2008-10-13
    RWE INNOGY MARKINCH LIMITED - 2016-05-04
    icon of address Windmill Hill Business Park, Whitehill Way, Swindon, Wiltshire, England
    Active Corporate (5 parents)
    Officer
    icon of calendar 2019-05-01 ~ 2020-04-29
    IIF 4 - Director → ME

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Contains public sector information retrieved at 16 October 2025 and licensed under the Open Government Licence v3.0.