SEREN LABORATORY SERVICES LIMITED
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Next accounts due
2026-09-30 (in 4mo)
Last filed for 2024-12-31
Confirmation statement due
2026-12-06 (in 7mo)
Last made up 2025-11-22
Watchouts
Cash
—
Latest balance sheet
Net assets
£1M
-23.8% vs 2023
Employees
157
-11.3% vs 2023
Profit before tax
-£228K
-347.8% vs 2023
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.
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
Net assets
2-year trend · vs Industrials median
Accounts
2-year trend · latest reflected 2024-12-31
| Metric | Trend | 2023-12-31 | 2024-12-31 |
|---|---|---|---|
| Turnover | £9,507,000 | £9,580,000 | |
| Operating profit | £148,000 | -£214,000 | |
| Profit before tax | £92,000 | -£228,000 | |
| Net profit | -£20,000 | -£325,000 | |
| Cash | — | — | |
| Total assets less current liabilities | £1,509,000 | £2,315,000 | |
| Net assets | £1,363,000 | £1,038,000 | |
| Equity | £1,363,000 | £1,038,000 | |
| Average employees | 177 | 157 | |
| Wages | £3,685,000 | £3,728,000 |
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 | 2023-12-31 | 2024-12-31 |
|---|---|---|---|
| Operating margin | 1.6% | -2.2% | |
| Net margin | -0.2% | -3.4% | |
| Return on capital employed | 9.8% | -9.2% | |
| Gearing (liabilities / total assets) | 77.5% | 71.0% | |
| Current ratio | 0.50x | 1.51x | |
| Interest cover | 2.64x | -3.82x |
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 101
- Reporting scope
- Standalone (parent only)
- Auditor
- Deloitte LLP
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“Based on the above analysis the directors have not identified a material uncertainty regarding the going concern assumption for the Company and therefore have a reasonable expectation that the Company will be able to continue to operate for at least the next 12 months from the date of approval of these financial statements. Therefore, the financial statements have been prepared on a going concern basis.”
Significant events
- “On 2 September 2025 the sale of the Company to Eurofins Forensics Lux Holding Sarl was agreed, with the sale being contractually binding. The expected completion date of the sale is 30 September 2025. The Company will then cease to be part of the SYNLAB group.”
- “Following the sale of the Company the long term financing structure of the Company will change. At the completion of the sale, Eurofins Forensics Lux Holding Sarl is contractually obliged to put the Company in funds to repay the cash pooling amounts due to Labco UK Group Limited. The value of the debt owed to Labco UK Group Limited as at 31 December 2024 was £1,242k.”
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 163 total filings
Material constitutional events — rename, articles re-file, resolution
- 2026-03-06 CERTNM Certificate change of name company PDF
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-03-10 | 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 | |
| 2024-01-02 | AD01 | address | Change registered office address company with date old address new address |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 17
- 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.
Year-on-year
FY2023 → FY2024 · period ending 2024-12-31 vs 2023-12-31
-
Turnover
+0.8%
£9,507,000 £9,580,000
-
Cash
—
Not reported
-
Net assets
-23.8%
£1,363,000 £1,038,000
-
Employees
-11.3%
177 157
-
Operating profit
-244.6%
£148,000 -£214,000
-
Profit before tax
-347.8%
£92,000 -£228,000
-
Wages
+1.2%
£3,685,000 £3,728,000
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