DIAMOND TRANSMISSION PARTNERS RB LIMITED
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Next accounts due
2026-12-31 (in 7mo)
Last filed for 2025-03-31
Confirmation statement due
2026-11-14 (in 6mo)
Last made up 2025-10-31
Watchouts
None on the register
Cash
£5M
+3.6% vs 2024
Net assets
£31M
+26.5% vs 2024
Employees
0
Average over period
Profit before tax
£524K
+1.4% vs 2024
Net assets
2-year trend · vs Utilities median
Accounts
2-year trend · latest reflected 2025-03-31
| Metric | Trend | 2024-03-31 | 2025-03-31 |
|---|---|---|---|
| Turnover | £5,743,000 | £6,060,000 | |
| Operating profit | £11,135,000 | £10,730,000 | |
| Profit before tax | £517,000 | £524,000 | |
| Net profit | £44,000 | £57,000 | |
| Cash | £4,461,000 | £4,622,000 | |
| Total assets less current liabilities | £497,714,000 | £481,562,000 | |
| Net assets | £24,585,000 | £31,112,000 | |
| Equity | £24,585,000 | £31,112,000 | |
| Average employees | 0 | 0 | |
| Wages | — | — | |
| Directors' remuneration | £126,000 | £138,000 |
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
Year-on-year
FY2024 → FY2025 · period ending 2025-03-31 vs 2024-03-31
-
Turnover
+5.5%
£5,743,000 £6,060,000
-
Cash
+3.6%
£4,461,000 £4,622,000
-
Net assets
+26.5%
£24,585,000 £31,112,000
-
Employees
—
Not reported
-
Operating profit
-3.6%
£11,135,000 £10,730,000
-
Profit before tax
+1.4%
£517,000 £524,000
Each % is (latest − prior) ÷ |prior| for the line item as filed. The comparison is only shown when the latest and prior accounts cover broadly equal-length periods — short or long stubs (typical around incorporation or a year-end change) are suppressed rather than misrepresented. Lines a company doesn't report are omitted. About these numbers
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2024-03-31 | 2025-03-31 |
|---|---|---|---|
| Operating margin | 193.9% | 177.1% | |
| Net margin | 0.8% | 0.9% | |
| Return on capital employed | 2.2% | 2.2% | |
| Gearing (liabilities / total assets) | 95.2% | 93.8% | |
| Current ratio | 1.14x | 1.12x | |
| Interest cover | 1.02x | 1.02x |
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. 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.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
4 active · 7 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| BESWETHERICK, Elizabeth Jo | Director | 2019-08-20 | Jan 1988 | British |
| DENG, Yandie | Director | 2025-07-30 | Jul 1990 | British |
| GWATINYANYA, Tawanda Soshangana | Director | 2026-04-17 | Aug 1983 | Zimbabwean |
| HEATH, James Christopher | Director | 2022-05-06 | Dec 1975 | British |
Show 7 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| FOOT, David Alexander John, Mr. | Director | 2019-08-20 | 2022-05-06 |
| IHARA, Hiromasa | Director | 2016-11-01 | 2018-03-26 |
| LEE, Kwansoo | Director | 2018-03-26 | 2019-11-25 |
| PITTS, Matthew John | Director | 2019-11-25 | 2025-07-30 |
| SHIMIZU, Satoshi | Director | 2016-11-01 | 2017-06-30 |
| THORNTON, Gary | Director | 2016-11-01 | 2026-04-17 |
| UMEMURA, Yasushi | Director | 2018-03-26 | 2019-08-20 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Diamond Transmission Partners Rb (Holdings) Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2016-11-01 | Active |
Filing timeline
Last 20 of 45 total filings
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-04-21 | AP01 | officers | Appoint person director company with name date | |
| 2026-04-21 | TM01 | officers | Termination director company with name termination date | |
| 2025-11-27 | AA | accounts | Accounts with accounts type full | |
| 2025-11-13 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 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 | |
| 2025-08-12 | AP01 | officers | Appoint person director company with name date | |
| 2025-08-12 | TM01 | officers | Termination director company with name termination date | |
| 2024-10-31 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-08-19 | AA | accounts | Accounts with accounts type full | |
| 2023-11-01 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2023-08-09 | AA | accounts | Accounts with accounts type full | |
| 2022-11-02 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2022-08-09 | AA | accounts | Accounts with accounts type full | |
| 2022-05-17 | AP01 | officers | Appoint person director company with name date | |
| 2022-05-17 | TM01 | officers | Termination director company with name termination date | |
| 2021-11-04 | CH01 | officers | Change person director company with change date | |
| 2021-11-04 | CH01 | officers | Change person director company with change date | |
| 2021-11-02 | CS01 | confirmation-statement | Confirmation statement with no updates |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 9
- Capital events
- 0
- Officers appointed
- 2
- 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.