TETRA TECH ENVIRONMENTAL MANAGEMENT LIMITED
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Next accounts due
2027-06-30 (in 1y)
Last filed for 2025-09-28
Confirmation statement due
2027-01-14 (in 8mo)
Last made up 2025-12-31
Watchouts
None on the register
Cash
£79K
-44% vs 2024
Net assets
£16M
-5.6% vs 2024
Employees
1,000
+3.6% vs 2024
Profit before tax
£10M
+61.9% vs 2024
Name history
Renamed 5 times since incorporation — the current trading name was adopted 2026-03-30
- TETRA TECH ENVIRONMENTAL MANAGEMENT LIMITED 2026-03-30 → present
- RPS ENVIRONMENTAL MANAGEMENT LIMITED 2011-08-09 → 2026-03-30
- RPS CONSULTANTS (UK) LIMITED 2010-09-15 → 2011-08-09
- RPS WATER SERVICES LIMITED 1999-03-26 → 2010-09-15
- PAN PROJECTS LIMITED 1983-11-23 → 1999-03-26
- SUNTOLL LIMITED 1983-09-26 → 1983-11-23
Net assets
2-year trend · vs Industrials median
Accounts
2-year trend · latest reflected 2025-09-28
| Metric | Trend | 2024-09-29 | 2025-09-28 |
|---|---|---|---|
| Turnover | £69,760,000 | £86,560,000 | |
| Operating profit | £6,084,000 | £9,852,000 | |
| Profit before tax | £6,085,000 | £9,852,000 | |
| Net profit | £3,767,000 | £6,958,000 | |
| Cash | £141,000 | £79,000 | |
| Total assets less current liabilities | £17,896,000 | £16,997,000 | |
| Net assets | £17,374,000 | £16,398,000 | |
| Equity | £17,374,000 | £16,398,000 | |
| Average employees | 965 | 1,000 | |
| Wages | £32,951,000 | £36,940,000 |
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 | 2024-09-29 | 2025-09-28 |
|---|---|---|---|
| Operating margin | 8.7% | 11.4% | |
| Net margin | 5.4% | 8.0% | |
| Return on capital employed | 34.0% | 58.0% | |
| Current ratio | 1.73x | 1.57x |
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
- 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 Environmental Management Limited.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
5 active · 22 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| MURDOCH, Andrew James | Secretary | 2023-10-06 | — | — |
| AITKEN, William Paul | Director | 2018-08-07 | Oct 1966 | Scottish |
| FRASER, Gary William | Director | 2022-07-29 | Apr 1975 | British |
| HATCH, David Craig | Director | 2023-11-17 | Nov 1964 | British |
| LEMMON, Richard Alan | Director | 2023-11-02 | Aug 1959 | American |
Show 22 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 | 2023-10-06 |
| RIGBY, April | Secretary | 1993-07-23 | 2008-09-25 |
| ROWE, Nicholas | Secretary | 2008-09-25 | 2018-12-04 |
| SECCOMBE, Jonathan Lawrence | Secretary | — | 1993-07-23 |
| BOYD, Martin Stephen | Director | 1999-07-01 | 2000-12-22 |
| BROWNLIE, William | Director | 2023-02-28 | 2023-11-02 |
| COTTRELL, Judith | Director | 2020-04-30 | 2023-02-28 |
| COTTRELL, Judith | Director | 2015-11-06 | 2019-01-14 |
| GILLESPIE, Andrew James | Director | 2023-02-28 | 2023-11-02 |
| GREEN, Christopher James | Director | 2023-11-02 | 2024-11-02 |
| HEARNE, Alan Stephen, Dr | Director | — | 2017-08-31 |
| HOYLE, Trevor Matthew | Director | 2015-11-06 | 2018-03-09 |
| KEELER, Nicholas Leslie Ronald | Director | 1999-07-27 | 2004-03-31 |
| OWEN, Robert | Director | 2019-01-14 | 2022-07-29 |
| POOK, Geoffrey Douglas Hall | Director | 1999-07-27 | 2001-10-04 |
| RIGBY, April | Director | 1993-07-23 | 2000-11-01 |
| ROBERTSON, James | Director | 1999-07-01 | 2000-03-30 |
| SECCOMBE, Jonathan Lawrence | Director | — | 1993-07-23 |
| TROW, Stuart William | Director | 1999-07-01 | 2000-02-15 |
| YOUNG, Gary Richard | Director | 2000-11-01 | 2020-04-30 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| R P S Group Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2016-04-06 | Active |
Filing timeline
Last 20 of 164 total filings
Material constitutional events — rename, articles re-file, resolution
- 2026-04-27 RESOLUTIONS Resolution
- 2026-04-27 MA Memorandum articles
- 2026-03-30 CERTNM Certificate change of name company PDF
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-04-27 | RESOLUTIONS | resolution | Resolution | |
| 2026-04-27 | MA | incorporation | Memorandum articles | |
| 2026-04-18 | AA | accounts | Accounts with accounts type full | |
| 2026-04-16 | PSC05 | persons-with-significant-control | Change to a person with significant control | |
| 2026-03-30 | CERTNM | change-of-name | Certificate change of name company | |
| 2026-01-05 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2025-11-19 | CH01 | officers | Change person director company with change date | |
| 2025-05-02 | AA | accounts | Accounts with accounts type full | |
| 2025-01-02 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2025-01-02 | AD01 | address | Change registered office address company with date old address new address | |
| 2024-11-04 | TM01 | officers | Termination director company with name termination date | |
| 2024-07-08 | AA | accounts | Accounts with accounts type full | |
| 2024-01-02 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2023-11-17 | AP01 | officers | Appoint person director company with name date | |
| 2023-11-03 | AP01 | officers | Appoint person director company with name date | |
| 2023-11-03 | AP01 | officers | Appoint person director company with name date | |
| 2023-11-03 | TM01 | officers | Termination director company with name termination date | |
| 2023-11-03 | TM01 | officers | Termination director company with name termination date | |
| 2023-10-09 | AP03 | officers | Appoint person secretary company with name date | |
| 2023-10-09 | TM02 | officers | Termination secretary company with name termination date |
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.
Year-on-year
FY2024 → FY2025 · period ending 2025-09-28 vs 2024-09-29
-
Turnover
+24.1%
£69,760,000 £86,560,000
-
Cash
-44%
£141,000 £79,000
-
Net assets
-5.6%
£17,374,000 £16,398,000
-
Employees
+3.6%
965 1,000
-
Operating profit
+61.9%
£6,084,000 £9,852,000
-
Profit before tax
+61.9%
£6,085,000 £9,852,000
-
Wages
+12.1%
£32,951,000 £36,940,000
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