TETRA TECH OCCUPATIONAL HEALTH LIMITED
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Next accounts due
2027-06-30 (in 1y)
Last filed for 2025-09-28
Confirmation statement due
2026-09-05 (in 4mo)
Last made up 2025-08-22
Watchouts
None on the register
Cash
£50K
+322.2% vs 2024
Net assets
£4M
+47.8% vs 2024
Employees
141
-7.2% vs 2024
Profit before tax
£2M
+169.4% vs 2024
Net assets
2-year trend · vs Health Care median
Accounts
2-year trend · latest reflected 2025-09-28
| Metric | Trend | 2024-09-29 | 2025-09-28 |
|---|---|---|---|
| Turnover | £11,089,753 | £11,390,216 | |
| Operating profit | £599,486 | £1,615,131 | |
| Profit before tax | £599,513 | £1,615,110 | |
| Net profit | £511,618 | £1,143,254 | |
| Cash | £11,843 | £50,000 | |
| Total assets less current liabilities | £2,415,408 | £3,578,689 | |
| Net assets | £2,394,296 | £3,539,055 | |
| Equity | £2,394,296 | £3,539,055 | |
| Average employees | 152 | 141 | |
| Wages | £5,985,650 | £5,550,190 | |
| Directors' remuneration | — | — |
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 2025-09-28 vs 2024-09-29
-
Turnover
+2.7%
£11,089,753 £11,390,216
-
Cash
+322.2%
£11,843 £50,000
-
Net assets
+47.8%
£2,394,296 £3,539,055
-
Employees
-7.2%
152 141
-
Operating profit
+169.4%
£599,486 £1,615,131
-
Profit before tax
+169.4%
£599,513 £1,615,110
-
Wages
-7.3%
£5,985,650 £5,550,190
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 | 2024-09-29 | 2025-09-28 |
|---|---|---|---|
| Operating margin | 5.4% | 14.2% | |
| Net margin | 4.6% | 10.0% | |
| Return on capital employed | 24.8% | 45.1% | |
| Gearing (liabilities / total assets) | 20.0% | 16.9% | |
| Current ratio | 4.47x | 5.61x | |
| Interest cover | — | 76911.00x |
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 3 times since incorporation — the current trading name was adopted 2026-03-30
- TETRA TECH OCCUPATIONAL HEALTH LIMITED 2026-03-30 → present
- RPS OCCUPATIONAL HEALTH LIMITED 2017-10-16 → 2026-03-30
- RPS HEALTH IN BUSINESS LIMITED 2010-03-23 → 2017-10-16
- HEALTH IN BUSINESS LIMITED 1999-08-23 → 2010-03-23
Audit & accounting basis
- Accounting basis
- FRS 102
- Reporting scope
- Standalone (parent only)
- Auditor
- Armstrong Watson Audit Limited
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“The directors have a reasonable expectation that the Company has adequate resources to continue in operational existence for at least 12 months from the date of signing the financial statements. Thus, they continue to adopt the going concern basis in preparing the annual financial statements.”
Significant events
- “On 30 March 2026 the company changed its name to Tetra Tech Occupational Health Limited.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
4 active · 19 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| MURDOCH, Andrew James | Secretary | 2023-11-29 | — | — |
| AITKEN, William Paul | Director | 2018-08-07 | Oct 1966 | Scottish |
| FRASER, Gary William | Director | 2022-07-29 | Apr 1975 | British |
| LEMMON, Richard Alan | Director | 2023-11-29 | Aug 1959 | American |
Show 19 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| ATTERBURY, Karen Lorraine | Secretary | 2022-05-09 | 2023-02-28 |
| GORMLEY, David Joseph | Secretary | 2018-12-04 | 2022-02-04 |
| HOPSON III, Preston | Secretary | 2023-02-28 | 2023-11-29 |
| PETERS, Clodagh Maire | Secretary | 2008-03-25 | 2010-02-17 |
| ROWE, Nicholas | Secretary | 2010-03-15 | 2018-12-04 |
| WHITEOAK, Karen Lynne Wallace, Dr | Secretary | 1999-08-23 | 2008-03-25 |
| SWIFT INCORPORATIONS LIMITED | Corporate Nominee Secretary | 1999-08-23 | 1999-08-23 |
| BROWNLIE, William | Director | 2023-02-28 | 2023-11-29 |
| COTTRELL, Judith | Director | 2020-04-30 | 2023-02-28 |
| COTTRELL, Judith | Director | 2015-11-06 | 2019-01-14 |
| GIDLOW, David Arthur, Dr | Director | 1999-08-23 | 2010-03-15 |
| GILLESPIE, Andrew James | Director | 2023-02-28 | 2023-11-29 |
| GREEN, Christopher James | Director | 2023-11-29 | 2024-10-30 |
| HEARNE, Alan Stephen, Dr | Director | 2010-03-15 | 2017-08-31 |
| HOYLE, Trevor Matthew | Director | 2015-11-06 | 2018-03-09 |
| LUDZKER, David Henry | Director | 1999-08-23 | 2001-09-28 |
| OWEN, Robert | Director | 2019-01-14 | 2022-07-29 |
| STEVENSON, Karen Lynne Wallace, Dr | Director | 1999-09-01 | 2010-03-15 |
| YOUNG, Gary Richard | Director | 2010-03-15 | 2020-04-30 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Tetra Tech Consulting Limited | Corporate entity | Shares 75–100% | 2016-04-06 | Active |
Filing timeline
Last 20 of 129 total filings
Material constitutional events — rename, articles re-file, resolution
- 2026-04-28 RESOLUTIONS Resolution
- 2026-04-28 MA Memorandum articles
- 2026-03-30 CERTNM Certificate change of name company PDF
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-04-28 | RESOLUTIONS | resolution | Resolution | |
| 2026-04-28 | MA | incorporation | Memorandum articles | |
| 2026-04-18 | AA | accounts | Accounts with accounts type full | |
| 2026-03-30 | CERTNM | change-of-name | Certificate change of name company | |
| 2025-11-19 | CH01 | officers | Change person director company with change date | |
| 2025-09-10 | PSC05 | persons-with-significant-control | Change to a person with significant control | |
| 2025-08-22 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2025-05-01 | AA | accounts | Accounts with accounts type full | |
| 2025-01-02 | AD01 | address | Change registered office address company with date old address new address | |
| 2024-10-30 | TM01 | officers | Termination director company with name termination date | |
| 2024-09-02 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-07-08 | AA | accounts | Accounts with accounts type full | |
| 2023-11-29 | AP03 | officers | Appoint person secretary company with name date | |
| 2023-11-29 | AP01 | officers | Appoint person director company with name date | |
| 2023-11-29 | AP01 | officers | Appoint person director company with name date | |
| 2023-11-29 | TM02 | officers | Termination secretary company with name termination date | |
| 2023-11-29 | TM01 | officers | Termination director company with name termination date | |
| 2023-11-29 | TM01 | officers | Termination director company with name termination date | |
| 2023-10-30 | AA01 | accounts | Change account reference date company previous shortened | |
| 2023-09-07 | CS01 | confirmation-statement | Confirmation statement with no updates |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 8
- Capital events
- 0
- Officers appointed
- 0
- Officers resigned
- 0
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.