FILTROX CARLSON LIMITED
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Cash
£57k
+15.1% vs 2024
Net assets
£8.3m
-3.2% vs 2024
Employees
94
+2.2% vs 2024
Profit before tax
-£8.1m
-53.1% vs 2024
Net assets
2-year trend · vs Basic Materials median
Accounts
2-year trend · Δ = latest vs prior filed period · latest reflected 2025-12-31
| Metric | Trend | 2024-12-31 | 2025-12-31 | Δ vs prior |
|---|---|---|---|---|
| Turnover | £14,338,482 | £19,395,315 | +35.3% | |
| Operating profit | -£4,410,571 | -£6,805,661 | -54.3% | |
| Profit before tax | -£5,286,558 | -£8,095,935 | -53.1% | |
| Net profit | -£3,953,613 | -£8,098,102 | -104.8% | |
| Cash | £49,950 | £57,494 | +15.1% | |
| Total assets less current liabilities | £23,679,457 | £27,142,267 | +14.6% | |
| Net assets | £8,541,371 | £8,270,183 | -3.2% | |
| Equity | £8,541,371 | £8,270,183 | -3.2% | |
| Average employees | 92 | 94 | +2.2% | |
| Wages | £3,222,850 | £4,712,641 | +46.2% | |
| Directors' remuneration | £231,268 | £495,049 | +114.1% |
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 | 2024-12-31 | 2025-12-31 |
|---|---|---|---|
| Operating margin | -30.8% | -35.1% | |
| Net margin | -27.6% | -41.8% | |
| Return on capital employed | -18.6% | -25.1% | |
| Gearing (liabilities / total assets) | 73.0% | 78.1% | |
| Interest cover | -5.03x | -5.27x |
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.
Name history
Renamed 2 times since incorporation
- FILTROX CARLSON LIMITED 2020-11-06 → present
- CARLSON FILTRATION LIMITED 1988-08-10 → 2020-11-06
- SQUAREFIN 101 LIMITED 1988-06-20 → 1988-08-10
Audit & accounting basis
- Accounting basis
- FRS 102
- Reporting scope
- Standalone (parent only)
- Auditor
- Forvis Mazars LLP
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“Having reviewed the Company's financial forecasts and expected future cash flows, the directors have concluded that there is a reasonable expectation that the Company has both continued support from its parent company and adequate resources to continue in operational existence for the foreseeable future.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
5 active · 17 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| HARTLEY, Jennifer Michelle | Secretary | 2025-04-14 | — | — |
| HARTLEY, Jennifer Michelle | Director | 2025-03-14 | Sep 1978 | British |
| HIRST, Paul Martin | Director | 2012-09-10 | Mar 1965 | British |
| LAWSON, David Jacques | Director | 2023-10-03 | Apr 1978 | British |
| MATTHES, Thoralf | Director | 2025-11-14 | May 1976 | German |
Show 17 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| BICKLEY, Richard Matthew | Secretary | 2001-04-24 | 2024-07-08 |
| GREEN, Steven Mark | Secretary | 1993-06-03 | 2001-02-28 |
| HARDING, William Henry | Secretary | 1993-02-11 | 1993-06-03 |
| RIGG, Simon Christopher | Secretary | 2024-07-15 | 2025-04-14 |
| SHERLOCK, Philip | Secretary | — | 1993-02-17 |
| E L SERVICES LIMITED | Corporate Secretary | 2001-02-28 | 2001-04-24 |
| BICKLEY, Richard Matthew | Director | 2002-02-19 | 2023-10-03 |
| BROWN, Emma Louise, Dr | Director | 2023-10-03 | 2025-08-25 |
| BROWN, Philip John | Director | 1998-01-01 | 2001-04-24 |
| ESKES, Don Henry | Director | 1998-04-27 | 2004-09-01 |
| GABBETT, Brian Robert | Director | 2001-02-28 | 2021-02-23 |
| GREEN, Steven Mark | Director | 1998-01-01 | 2001-02-28 |
| HALLEWELL, John | Director | 1998-01-01 | 1999-04-13 |
| HARDING, William Henry | Director | — | 2000-10-03 |
| RUSCH, Toni, Dr | Director | — | 2012-09-10 |
| SHERLOCK, Philip | Director | — | 1993-02-17 |
| WARING, Lee | Director | 2025-06-06 | 2026-01-30 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Doctor Cristian Rusch | Individual | Significant influence | 2016-04-06 | Active |
Filing timeline
Last 20 of 141 total filings
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-09-09 | AA | accounts | Accounts with accounts type full | |
| 2026-01-30 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2026-01-30 | TM01 | officers | Termination director company with name termination date | |
| 2025-11-14 | AP01 | officers | Appoint person director company with name date | |
| 2025-09-22 | AA | accounts | Accounts with accounts type medium | |
| 2025-08-26 | TM01 | officers | Termination director company with name termination date | |
| 2025-06-06 | AP01 | officers | Appoint person director company with name date | |
| 2025-04-15 | AP03 | officers | Appoint person secretary company with name date | |
| 2025-04-15 | TM02 | officers | Termination secretary company with name termination date | |
| 2025-03-14 | AP01 | officers | Appoint person director company with name date | |
| 2025-01-31 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-09-12 | AA | accounts | Accounts with accounts type full | |
| 2024-07-17 | AP03 | officers | Appoint person secretary company with name date | |
| 2024-07-17 | TM02 | officers | Termination secretary company with name termination date | |
| 2024-01-04 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2023-10-03 | TM01 | officers | Termination director company with name termination date | |
| 2023-10-03 | AP01 | officers | Appoint person director company with name date | |
| 2023-10-03 | AP01 | officers | Appoint person director company with name date | |
| 2023-02-28 | AA | accounts | Accounts with accounts type full | |
| 2023-01-16 | CS01 | confirmation-statement | Confirmation statement with no updates |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 5
- Capital events
- 0
- Officers appointed
- 1
- 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.