DIAMOND TRANSMISSION PARTNERS HORNSEA ONE LIMITED
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Cash
£14M
+14.9% vs 2024
Net assets
£82M
+66.7% vs 2024
Employees
0
Average over period
Profit before tax
£3.5M
+27.1% vs 2024
Net assets
2-year trend · vs Utilities median
Accounts
2-year trend · Δ = latest vs prior filed period · latest reflected 2025-03-31
| Metric | Trend | 2024-03-31 | 2025-03-31 | Δ vs prior |
|---|---|---|---|---|
| Turnover | £10,581,000 | £9,608,000 | -9.2% | |
| Operating profit | £32,524,000 | £33,596,000 | +3.3% | |
| Profit before tax | £2,750,000 | £3,494,000 | +27.1% | |
| Net profit | £1,275,000 | £1,746,000 | +36.9% | |
| Cash | £12,352,000 | £14,195,000 | +14.9% | |
| Total assets less current liabilities | £1,362,995,000 | £1,347,205,000 | -1.2% | |
| Net assets | £49,431,000 | £82,379,000 | +66.7% | |
| Equity | £49,431,000 | £82,379,000 | +66.7% | |
| Average employees | — | 0 | — | |
| Wages | — | — | — | |
| Directors' remuneration | £120,000 | £130,000 | +8.3% |
Values shown as filed in the company's annual accounts. — indicates the figure wasn't present under that line item in that period. The Δ column is the change from the prior filed period as a percentage of |prior|; lines a company doesn't report show —. About these numbers
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2024-03-31 | 2025-03-31 |
|---|---|---|---|
| Net margin | 12.0% | 18.2% | |
| Return on capital employed | 2.4% | 2.5% | |
| Gearing (liabilities / total assets) | 96.4% | 94.0% | |
| Current ratio | 2.00x | 1.12x | |
| Interest cover | 1.07x | 1.09x |
Margins divide P&L lines by turnover. Gearing is liabilities over total assets. Current ratio is current assets over creditors falling due within one year. Interest cover is operating profit over absolute finance costs. Margin ratios are hidden where reported turnover is too small relative to profit to yield a meaningful figure — typical of holding companies whose income is mostly subsidiary dividends rather than trading revenue. Sector-distribution context coming next.
Audit & accounting basis
- Accounting basis
- IFRS
- Reporting scope
- Standalone (parent only)
- 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 the Company is a going concern and has adequate resources in the foreseeable future to meet its on-going obligations, including the compliance with all debt covenants and servicing of debt holders, as those obligations fall due.”
Significant events
- “The reduction in availability was due to the failure of disconnector X704 and an outage on export cable circuit 2 to repair a cable earth sheath clamp.”
- “During the year under review there was one health and safety incident that required reporting under Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013 ("RIDDOR"), being the central export cable fault. When the export cable faulted it caused a small electrical arc flash which triggered the fire system.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
5 active · 11 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 11 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 | 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 |
|---|---|---|---|---|
| Diamond Transmission Partners Hornsea One (Holdings) Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2019-05-20 | Active |
Filing timeline
Last 20 of 45 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 full | |
| 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 | |
| 2025-05-06 | 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 full | |
| 2024-05-21 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-02-15 | AP01 | officers | Appoint person director company with name date | |
| 2024-02-08 | TM01 | officers | Termination director company with name termination date | |
| 2023-08-09 | AA | accounts | Accounts with accounts type full | |
| 2023-07-25 | AP01 | officers | Appoint person director company with name date | |
| 2023-07-25 | TM01 | officers | Termination director company with name termination date |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 10
- Capital events
- 0
- Officers appointed
- 3
- Officers resigned
- 2
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.