DIAMOND TRANSMISSION PARTNERS HORNSEA ONE (HOLDINGS) LIMITED
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Next accounts due
2026-12-31 (in 7mo)
Last filed for 2025-03-31
Confirmation statement due
2026-06-02 (in 1mo)
Last made up 2025-05-19
Watchouts
Cash
—
Latest balance sheet
Net assets
—
Equity attributable
Employees
0
Average over period
Profit before tax
—
Period ending 2025-03-31
Watchouts
Facts from the Companies House register and the latest accounts — not a rating
-
4 officer resignations in last 12 months
Multiple officers have left the board recently — see the People section for who.
Headcount
3-year trend · vs Utilities median
Accounts
3-year trend · latest reflected 2025-03-31
| Metric | Trend | 2023-03-31 | 2024-03-31 | 2025-03-31 |
|---|---|---|---|---|
| Turnover | — | — | — | |
| Operating profit | — | — | — | |
| Profit before tax | — | — | — | |
| Net profit | — | — | — | |
| Cash | — | — | — | |
| Total assets less current liabilities | — | — | — | |
| Net assets | — | — | — | |
| Equity | £1,000 | £1,000 | £1,000 | |
| Average employees | — | — | 0 | |
| Wages | — | — | — |
Values shown as filed in the company's annual accounts. — indicates the figure wasn't present under that line item in that period. About these numbers
Audit & accounting basis
- Accounting basis
- IFRS
- Reporting scope
- Consolidated group
- Auditor
- Johnston Carmichael LLP
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“The Directors have confirmed that after due enquiry they have sufficient evidence to support their conclusion that both the Group and the Company are going concerns and have adequate resources in the foreseeable future to meet their on-going obligations, including the compliance with all debt covenants and servicing of debt holders, as those obligations fall due.”
Group structure
- DIAMOND TRANSMISSION PARTNERS HORNSEA ONE (HOLDINGS) LIMITED · parent
- Diamond Transmission Partners Hornsea One Limited 100%
Significant events
- “On 19 January 2024 the central export cable tripped due to the failure of an earth sheath clamp at the RCS. Following prompt action by the Company the export cable was repaired and the central circuit returned to service on 24 February 2024. In addition, following monitoring of other cable earth sheath clamps several circuit de-ratings were necessary in order to prevent thermal runaway of several earth sheath clamps and failure of the export cable.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
5 active · 12 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| GWATINYANYA, Tawanda Soshangana | Director | 2026-04-17 | Aug 1983 | Zimbabwean |
| ITO, Akihide | Director | 2022-03-29 | Jul 1969 | Japanese |
| KATAOKA, Kunio | Director | 2023-07-20 | Sep 1970 | Japanese |
| KOJIMA, Fumiyasu | Director | 2025-11-14 | May 1996 | Japanese |
| SAKAI, Naotaka | Director | 2026-04-17 | Feb 1989 | Japanese |
Show 12 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| KOBAYASHI, Ryoji | Director | 2021-01-20 | 2021-07-02 |
| MURAMIYA, Masanobu | Director | 2020-08-03 | 2021-01-20 |
| NAKANO, Reina | Director | 2025-05-02 | 2025-05-02 |
| NAKANO, Reina | Director | 2025-05-02 | 2026-04-17 |
| NISHIKAWA, Jun | Director | 2021-01-20 | 2022-03-29 |
| PITTS, Matthew John | Director | 2019-05-20 | 2021-03-24 |
| SUGIMORI, Katsuji | Director | 2022-03-29 | 2023-07-20 |
| TAMATE, Keiro | Director | 2021-03-24 | 2024-01-30 |
| THORNTON, Gary | Director | 2019-05-20 | 2026-04-17 |
| UEKI, Michiharu | Director | 2021-07-02 | 2022-03-29 |
| UMEMURA, Yasushi | Director | 2019-05-20 | 2020-03-31 |
| YUKI, Masaya | Director | 2024-01-30 | 2025-05-02 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Chubu Global Investment B.V. | Corporate entity | Shares 25–50%, Voting 25–50% | 2023-03-29 | Active |
| Mhc Infrastructure Uk Limited | Corporate entity | Shares 25–50%, Voting 25–50% | 2021-06-21 | Active |
| Chubu Electric Power Company Netherlands B.V. | Corporate entity | Shares 25–50%, Voting 25–50% | 2021-02-23 | Ceased 2023-03-29 |
| Diamond Transmission Corporation Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2019-05-20 | Ceased 2021-06-21 |
Filing timeline
Last 20 of 54 total filings
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-04-29 | CH01 | officers | Change person director company with change date | |
| 2026-04-22 | AP01 | officers | Appoint person director company with name date | |
| 2026-04-21 | AP01 | officers | Appoint person director company with name date | |
| 2026-04-21 | TM01 | officers | Termination director company with name termination date | |
| 2026-04-21 | TM01 | officers | Termination director company with name termination date | |
| 2025-11-27 | AA | accounts | Accounts with accounts type group | |
| 2025-11-21 | AP01 | officers | Appoint person director company with name date | |
| 2025-10-09 | AD01 | address | Change registered office address company with date old address new address | |
| 2025-10-02 | AD01 | address | Change registered office address company with date old address new address | |
| 2025-09-29 | AD01 | address | Change registered office address company with date old address new address | |
| 2025-05-20 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2025-05-08 | AP01 | officers | Appoint person director company with name date | |
| 2025-05-08 | TM01 | officers | Termination director company with name termination date | |
| 2025-05-06 | AP01 | officers | Appoint person director company with name date | |
| 2025-05-06 | TM01 | officers | Termination director company with name termination date | |
| 2024-08-16 | AA | accounts | Accounts with accounts type group | |
| 2024-05-21 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-02-15 | AP01 | officers | Appoint person director company with name date | |
| 2024-02-09 | TM01 | officers | Termination director company with name termination date | |
| 2023-08-09 | AA | accounts | Accounts with accounts type group |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 15
- Capital events
- 0
- Officers appointed
- 3
- Officers resigned
- 4
last 12 months
last 24 months
last 12 months
last 12 months
Direct counts from the register. No score, no rating — see the Filing timeline for the underlying events.
Year-on-year
FY2024 → FY2025 · period ending 2025-03-31 vs 2024-03-31