CULLUM DETUNERS INVESTMENTS LIMITED
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Next accounts due
2026-12-31 (in 7mo)
Last filed for 2025-03-31
Confirmation statement due
2027-02-13 (in 9mo)
Last made up 2026-01-30
Watchouts
None on the register
Cash
£4M
+40.4% vs 2024
Net assets
£12M
+13% vs 2024
Employees
165
+33.1% vs 2024
Profit before tax
£2M
+30% vs 2024
Net assets
2-year trend · vs Financials median
Accounts
2-year trend · latest reflected 2025-03-31
| Metric | Trend | 2024-03-31 | 2025-03-31 |
|---|---|---|---|
| Turnover | £26,124,000 | £32,648,000 | |
| Operating profit | £1,370,000 | £2,046,000 | |
| Profit before tax | £1,616,000 | £2,100,000 | |
| Net profit | £1,217,000 | £1,391,000 | |
| Cash | £2,909,000 | £4,084,000 | |
| Total assets less current liabilities | £12,992,000 | £14,306,000 | |
| Net assets | £10,896,000 | £12,309,000 | |
| Equity | £10,896,000 | £12,309,000 | |
| Average employees | 124 | 165 | |
| Wages | £5,213,000 | £6,839,000 |
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
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2024-03-31 | 2025-03-31 |
|---|---|---|---|
| Operating margin | 5.2% | 6.3% | |
| Net margin | 4.7% | 4.3% | |
| Return on capital employed | 10.5% | 14.3% | |
| Gearing (liabilities / total assets) | 47.1% | 46.8% | |
| Current ratio | 1.72x | 1.78x | |
| Interest cover | 15.39x | 20.46x |
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
- FRS 102
- Reporting scope
- Consolidated group
- Auditor
- Cooper Parry Group Limited
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“The directors therefore consider it appropriate for the financial statements to be prepared on a going concern basis.”
Group structure
- CULLUM DETUNERS INVESTMENTS LIMITED · parent
- Cullum Detuners Limited 100%
- Cullum-USA Inc 100%
- EMS Industries Limited 100%
- Jade Insulation Limited 100%
- A G S Noise Control Limited 100%
Significant events
- “Following an internal restructure during the financial year, the company now holds investments in five subsidiaries.”
- “AGS Noise Control Limited was acquired in October 2024, to support expansion within local Architectural Acoustic and Healthcare sectors.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
6 active · 5 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| THOMPSON, Mark David | Secretary | 2026-04-01 | — | — |
| COLE, Richard Brian Dominic | Director | 2023-03-29 | Jul 1957 | British |
| GILBERT, Michael George | Director | 2009-07-01 | Aug 1951 | British |
| JANSEN, Mark Richard | Director | 2024-11-14 | May 1979 | British |
| MINARDS, Jane Lesley | Director | 2022-10-26 | Apr 1964 | English |
| THOMPSON, Mark David | Director | 2026-01-01 | May 1970 | British |
Show 5 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| KIRKMAN, Ivor James Sellers | Secretary | 2010-01-01 | 2026-03-31 |
| PEERS, Audrey | Secretary | 1993-03-01 | 2009-12-31 |
| DALE, Robert | Director | 1993-03-01 | 2008-12-31 |
| LEVERTON, David John | Director | 1993-03-01 | 2020-03-31 |
| WALKER, Alan Leonard | Director | 2009-01-01 | 2022-12-31 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Cullum Trustees Limited | Corporate entity | Shares 75–100% | 2016-04-06 | Active |
Filing timeline
Last 20 of 93 total filings
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-04-08 | AP03 | officers | Appoint person secretary company with name date | |
| 2026-04-08 | TM02 | officers | Termination secretary company with name termination date | |
| 2026-01-30 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2026-01-05 | AP01 | officers | Appoint person director company with name date | |
| 2025-10-03 | AA | accounts | Accounts with accounts type group | |
| 2025-02-10 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-11-24 | AP01 | officers | Appoint person director company with name date | |
| 2024-10-21 | AA | accounts | Accounts with accounts type group | |
| 2024-02-21 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-01-22 | CH01 | officers | Change person director company with change date | |
| 2023-12-11 | AA | accounts | Accounts with accounts type group | |
| 2023-04-01 | AP01 | officers | Appoint person director company with name date | |
| 2023-02-26 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2023-01-11 | CH03 | officers | Change person secretary company with change date | |
| 2023-01-11 | TM01 | officers | Termination director company with name termination date | |
| 2022-10-27 | AP01 | officers | Appoint person director company with name date | |
| 2022-10-10 | AA | accounts | Accounts with accounts type group | |
| 2022-02-11 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2021-12-06 | AA | accounts | Accounts with accounts type group | |
| 2021-02-26 | AA | accounts | Accounts with accounts type group |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 5
- Capital events
- 0
- Officers appointed
- 2
- Officers resigned
- 1
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
-
Turnover
+25%
£26,124,000 £32,648,000
-
Cash
+40.4%
£2,909,000 £4,084,000
-
Net assets
+13%
£10,896,000 £12,309,000
-
Employees
+33.1%
124 165
-
Operating profit
+49.3%
£1,370,000 £2,046,000
-
Profit before tax
+30%
£1,616,000 £2,100,000
-
Wages
+31.2%
£5,213,000 £6,839,000
Each % is (latest − prior) ÷ |prior| for the line item as filed. Periods don't have to be exactly 12 months apart — a long or short period (typical around incorporation or year-end changes) will distort the comparison. Lines a company doesn't report are omitted. About these numbers