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Horizon Nuclear Power Wylfa Holdings Limited

Horizon Nuclear Power Wylfa Holdings Limited is an active UK company (number 09641958), incorporated 2015, with 4 current directors including Takashi Tonooka and Yasunori Inada. Source: Companies House, updated 4th October 2026.

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Official record Companies House · updated 4th October 2026 · Sources

Network

The large node is Horizon Nuclear Power Wylfa Holdings Limited. Red nodes are organisations, white nodes are people. Sign in free to explore further.

Who leads it

Previous officers 18

  1. Stephen Keith Pierce 2021-2024 Director View profile
  2. Tadashi Kume 2020-2023 Director View profile
  3. Tomohiro Satake 2019-2023 Director View profile
  4. Masahiko Nakane 2019-2021 Director View profile
  5. Hidetoshi Takehara 2019-2020 Director View profile
  6. Yoshiteru Murase 2019-2020 Director View profile
  7. Duncan Hawthorne 2015-2021 Director View profile
  8. Dr Timothy John Stone 2015-2021 Director View profile
  9. Masahide Tanigaki 2015-2020 Director View profile
  10. Katsumi Nagasawa 2015-2019 Director View profile
  11. Sir Stephen John Gomersall 2015-2020 Director View profile
  12. Alan Paul Raymant 2015-2016 Director View profile
  13. Sang Hoon David Lee 2015-2019 Director View profile
  14. Tatsuro Ishizuka 2015-2016 Director View profile
  15. Jonathan Miles Cornelius 2019-2021 Secretary View profile
  16. James William Jones 2017-2019 Secretary View profile
  17. Jonathan Miles Cornelius 2016-2017 Secretary View profile
  18. Alexander William Rippon 2015-2016 Secretary View profile

Directors and secretaries as filed at Companies House.

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About

Incorporated
16/06/2015

Ownership

Owned by (1) iOwned byIndividuals and companies registered as having significant control over this company, from the Companies House PSC (persons with significant control) register. People whose ownership could not be confirmed to one individual are not listed as confirmed owners.

Group

  1. Horizon Nuclear Power Wylfa Holdings Limited is controlled by Horizon Nuclear Power Limited
    Evidence
    active 75-100% shares, 75-100% voting, appoints directors · notified 2016-04-06 · source: Companies House PSC register

Ultimately controlled by Horizon Nuclear Power Limited.

4 other companies in this group

Ownership paths are calculated from Companies House persons-with-significant-control filings. Each step shows the filed nature of control and dates; a step marked "ceased" is historical, not current.

Board analysis

Board DNA

How this board is put together, from the Companies House officer record and Charity Commission trustee records - deterministic, no AI.iBoard compositionCounted from the dated Companies House officer record: the current directors only, past directors excluded.

4 directors on the board

4.7y median 4.3y
average tenure
7.3y
longest tenure

Directors past 6 years

First-time vs portfolio directors

Portfolio (4)

0
also govern a charity
0
left in the last 12 months

Where else this board sits iWhere else this board sitsThe charitable fields these directors govern in elsewhere, by Charity Commission classification. Excludes this company and any charity it is the legal face of.

Utilities 13

The sectors these directors govern in elsewhere. This company, and any charity it is the legal face of, are excluded - counting them would just tell you what you are already looking at.

Gaps to watch

  • Narrow spread of sectors across the board

Where to look Suggested search: directors from a wider range of sectors.

Sources

Official record from Companies House. Governance Register calculates the connections.

Record details
Company number
09641958
Status
Active
Type
Private Limited Company
Edition
Register edition compiled 4th October 2026
Labels
Official record from Companies House · Calculated derived by Governance Register.

Contains public sector information licensed under the Open Government Licence v3.0. Report an issue · How we handle data