SEREN LABORATORY SERVICES LIMITED
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Cash
£867k
Latest balance sheet
Net assets
-£1.2m
-211.9% lowest in 3 filed years
Employees
148
-5.7% lowest in 3 filed years
Profit before tax
-£2m
-792.1% lowest in 3 filed years
Watchouts
Facts from the Companies House register and the latest accounts — not a rating
-
1 PSC ceased in last 24 months
Significant control changed hands — see the Ownership section.
-
Negative shareholders' funds
Net assets
3-year trend · vs Industrials median
Accounts
3-year trend · Δ = latest vs prior filed period · latest reflected 2025-12-31
| Metric | Trend | 2023-12-31 | 2024-12-31 | 2025-12-31 | Δ vs prior |
|---|---|---|---|---|---|
| Turnover | £9,507,000 | £9,580,000 | £9,146,000 | -4.5% | |
| Operating profit | £148,000 | -£214,000 | -£1,913,000 | -793.9% | |
| Profit before tax | £92,000 | -£228,000 | -£2,034,000 | -792.1% | |
| Net profit | -£20,000 | -£325,000 | -£2,200,000 | -576.9% | |
| Cash | — | £0 | £867,000 | — | |
| Total assets less current liabilities | £1,509,000 | £2,315,000 | £1,844,000 | -20.3% | |
| Net assets | £1,363,000 | £1,038,000 | -£1,162,000 | -211.9% | |
| Equity | £1,363,000 | £1,038,000 | -£1,162,000 | -211.9% | |
| Average employees | 177 | 157 | 148 | -5.7% | |
| Wages | £3,685,000 | £3,728,000 | £3,616,000 | -3% | |
| Directors' remuneration | £148,000 | £128,000 | £133,000 | +3.9% |
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 | 2023-12-31 | 2024-12-31 | 2025-12-31 |
|---|---|---|---|---|
| Operating margin | 1.6% | -2.2% | -20.9% | |
| Net margin | -0.2% | -3.4% | -24.1% | |
| Return on capital employed | 9.8% | -9.2% | -103.7% | |
| Gearing (liabilities / total assets) | 77.5% | 71.0% | — | |
| Current ratio | 0.50x | 1.64x | 1.89x | |
| Interest cover | 2.64x | -3.75x | -15.81x |
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 4 times since incorporation — the current trading name was adopted 2026-03-06
- SEREN LABORATORY SERVICES LIMITED 2026-03-06 → present
- SYNLAB LABORATORY SERVICES LIMITED 2017-05-02 → 2026-03-06
- SYNERGY HEALTH LABORATORY SERVICES LIMITED 2009-05-15 → 2017-05-02
- JMJ LABORATORIES LIMITED 1996-08-13 → 2009-05-15
- WARRIOR DESIGNS LIMITED 1996-06-24 → 1996-08-13
Audit & accounting basis
- Accounting basis
- FRS 101
- Reporting scope
- Standalone (parent only)
- Auditor
- Constantin
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“The directors consider the going concern basis to be appropriate following their assessment of the Company's financial position and its ability to meet its obligations as and when they fall due. Following the assessment, the directors have a reasonable expectation that the Company will be able to continue to operate for at least the next 12 months.”
Significant events
- “Subsequent to 31 December 2025, geopolitical tensions in the Middle East escalated on 28 February 2026, including military actions and related economic sanctions involving the United States, Iran, Israel, and certain other countries in the region (the "Conflict").”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
4 active · 27 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| GANDERTON, Laura Jayne | Secretary | 2025-09-30 | — | — |
| CARNAGHAN, Mark Lindesay | Director | 2025-09-30 | Sep 1980 | British |
| NELSON, Andrew David | Director | 2025-09-30 | Apr 1980 | British |
| PEARSE, Mark Laurence | Director | 2025-09-30 | Nov 1967 | British |
Show 27 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| MASON, Timothy Charles | Secretary | 2013-07-30 | 2014-07-23 |
| MCKENZIE-WYNNE, Derrick Paul | Secretary | 1996-07-31 | 2007-11-12 |
| STUBBINS, David Riley | Secretary | 2007-11-12 | 2013-07-30 |
| TURNER, Jonathan Paul | Secretary | 2014-07-23 | 2016-09-01 |
| CO FORM (SECRETARIES) LIMITED | Corporate Nominee Secretary | 1996-06-24 | 1996-07-31 |
| BARKER, John Kirk | Director | 1996-07-31 | 2007-03-31 |
| COWARD, Adrian Vincent, Dr | Director | 2010-09-01 | 2016-09-01 |
| EVANS, Thomas Edward | Director | 2018-03-13 | 2025-09-30 |
| FAZAL, Michael David | Director | 2007-11-12 | 2009-04-30 |
| FULLERTON, Christopher John | Director | 2016-09-01 | 2017-09-14 |
| GUÉNY, Arnaud | Director | 2018-04-13 | 2020-12-09 |
| HILL, Gavin | Director | 2010-04-26 | 2016-04-29 |
| JACQUES, Ivan Mark | Director | 2007-04-02 | 2010-04-26 |
| JAMES, Paul Nicholas | Director | 2019-03-20 | 2023-01-31 |
| JONES, William Gary | Director | 1996-08-09 | 2002-05-14 |
| MASON, Timothy Charles | Director | 2012-02-20 | 2014-07-23 |
| MCKENZIE-WYNNE, Derrick Paul | Director | 1996-07-31 | 2007-11-12 |
| MORGAN, Lyndon Owen | Director | 1996-08-09 | 1998-06-30 |
| PAYNE, Alison Ruth | Director | 2002-08-01 | 2010-12-19 |
| QUIN, Stuart James | Director | 2016-09-01 | 2018-04-13 |
| RALPH, Nicholas Anthony | Director | 2018-04-13 | 2019-03-20 |
| STEEVES, Richard Martin, Dr | Director | 2007-04-02 | 2015-11-10 |
| STOPFORD, Nicholas John | Director | 2016-09-01 | 2018-03-13 |
| STRETTON, Adam John | Director | 2023-01-31 | 2025-11-07 |
| TOKICH, Michael Joseph | Director | 2016-06-22 | 2016-09-01 |
| TURNER, Jonathan Paul | Director | 2014-07-23 | 2016-09-01 |
| CO FORM (NOMINEES) LIMITED | Corporate Nominee Director | 1996-06-24 | 1996-07-31 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Eurofins Scientific S.E. | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2025-11-11 | Active |
| Eurofins Forensics Lux Holdings Sarl | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2025-09-30 | Active |
| Labco Uk Group Limited | Corporate entity | Shares 75–100% | 2016-09-01 | Ceased 2025-09-30 |
Filing timeline
Last 20 of 164 total filings
Material constitutional events — rename, articles re-file, resolution
- 2026-03-06 CERTNM Certificate change of name company PDF
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-07-31 | AA | accounts | Accounts with accounts type full | |
| 2026-03-10 | AD01 | address | Change registered office address company with date old address new address | |
| 2026-03-06 | CERTNM | change-of-name | Certificate change of name company | |
| 2026-02-03 | SH01 | capital | Capital allotment shares | |
| 2026-01-19 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2025-11-11 | CH03 | officers | Change person secretary company with change date | |
| 2025-11-11 | PSC02 | persons-with-significant-control | Notification of a person with significant control | |
| 2025-11-07 | TM01 | officers | Termination director company with name termination date | |
| 2025-10-24 | AD01 | address | Change registered office address company with date old address new address | |
| 2025-10-21 | AD01 | address | Change registered office address company with date old address new address | |
| 2025-10-10 | PSC07 | persons-with-significant-control | Cessation of a person with significant control | |
| 2025-10-10 | PSC02 | persons-with-significant-control | Notification of a person with significant control | |
| 2025-10-10 | TM01 | officers | Termination director company with name termination date | |
| 2025-10-10 | AP01 | officers | Appoint person director company with name date | |
| 2025-10-10 | AP01 | officers | Appoint person director company with name date | |
| 2025-10-10 | AP01 | officers | Appoint person director company with name date | |
| 2025-10-10 | AP03 | officers | Appoint person secretary company with name date | |
| 2025-10-08 | AA | accounts | Accounts with accounts type full | |
| 2024-11-24 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-08-01 | AA | accounts | Accounts with accounts type full |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 18
- Capital events
- 1
- Officers appointed
- 4
- 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.