TETRA TECH CONSULTING 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
£432K
-44.5% vs 2024
Net assets
£49M
+88.3% vs 2024
Employees
830
-12.5% vs 2024
Profit before tax
£11M
+643.6% vs 2024
Name history
Renamed 4 times since incorporation — the current trading name was adopted 2025-09-02
- TETRA TECH CONSULTING LIMITED 2025-09-02 → present
- RPS CONSULTING SERVICES LIMITED 2016-08-23 → 2025-09-02
- THE ENVIRONMENTAL CONSULTANCY LIMITED 1992-11-23 → 2016-08-23
- RPS CLOUSTON LIMITED 1990-03-20 → 1992-11-23
- BRIAN CLOUSTON AND PARTNERS LIMITED 1979-12-31 → 1990-03-20
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 | £104,914,000 | £112,173,000 | |
| Operating profit | £909,000 | £10,827,000 | |
| Profit before tax | £1,456,000 | £10,827,000 | |
| Net profit | -£623,000 | £8,534,000 | |
| Cash | £779,000 | £432,000 | |
| Total assets less current liabilities | £27,401,000 | £50,271,000 | |
| Net assets | £26,180,000 | £49,288,000 | |
| Equity | £26,180,000 | £49,288,000 | |
| Average employees | 949 | 830 | |
| Wages | £49,328,000 | £46,253,000 |
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 | 0.9% | 9.7% | |
| Net margin | -0.6% | 7.6% | |
| Return on capital employed | 3.3% | 21.5% | |
| Current ratio | 1.47x | 1.23x | |
| Interest cover | 454.50x | — |
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.”
Group structure
- TETRA TECH CONSULTING LIMITED · parent
- RPS Ireland Limited
- RPS Occupational Health Limited
- RPS Health in Business Limited
- RPS Mountainheath Limited
- RPS Consultants Limited
- RPS Heritage Limited 0.13%
- RPS Heritage Holdings Limited
Significant events
- “The company changed its name from RPS Consulting Services Limited to Tetra Tech Consulting Limited on 2 September 2025.”
- “The results for the Company show net assets of £49,288,000 (2024: £26,180,000) reported in the Balance Sheet. This increase reflects the acquisition of the trading assts of RPS Ireland Limited at the 28 September 2025.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
5 active · 23 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| MURDOCH, Andrew James | Secretary | 2023-10-06 | — | — |
| HATCH, David Craig | Director | 2023-11-17 | Nov 1964 | British |
| LEMMON, Richard Alan | Director | 2023-11-02 | Aug 1959 | American |
| LEWIS, Michelle | Director | 2022-07-05 | Oct 1974 | British |
| SHAW, Michael Robert, Dr | Director | 2025-01-09 | Jul 1958 | British |
Show 23 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 |
| BROWNLIE, William | Director | 2023-02-28 | 2023-11-02 |
| CHUBB, John James | Director | 2018-11-13 | 2022-07-04 |
| COTTRELL, Judith | Director | 2020-04-30 | 2023-02-28 |
| COTTRELL, Judith | Director | 2015-11-06 | 2019-01-17 |
| DOWEN, Peter Burl | Director | — | 2011-09-30 |
| DUNBAR, David Robert | Director | 2023-10-26 | 2024-12-31 |
| 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 |
| MARTIN, Siobhan Claire | Director | 2019-01-17 | 2022-07-29 |
| PARRY, Graham David Richard | Director | — | 2002-02-25 |
| RIGBY, April | Director | 1993-07-23 | 2000-11-01 |
| SECCOMBE, Jonathan Lawrence | Director | — | 1993-07-23 |
| SUTTON, Adam Matthew | Director | 2022-07-26 | 2023-09-25 |
| TROUP, Andrew Richard Gordon | Director | — | 2009-11-05 |
| 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 216 total filings
Material constitutional events — rename, articles re-file, resolution
- 2026-03-05 RESOLUTIONS Resolution
- 2025-09-17 RESOLUTIONS Resolution
- 2025-09-17 MA Memorandum articles
- 2025-09-16 RESOLUTIONS Resolution
- 2025-09-02 CERTNM Certificate change of name company
- 2025-09-02 CONNOT Change of name notice
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-04-18 | AA | accounts | Accounts with accounts type full | |
| 2026-03-05 | SH19 | capital | Capital statement capital company with date currency figure | |
| 2026-03-05 | CAP-SS | insolvency | Legacy | |
| 2026-03-05 | SH20 | capital | Legacy | |
| 2026-03-05 | RESOLUTIONS | resolution | Resolution | |
| 2026-01-20 | CH01 | officers | Change person director company with change date | |
| 2026-01-05 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2025-11-19 | CH01 | officers | Change person director company with change date | |
| 2025-10-21 | PSC05 | persons-with-significant-control | Change to a person with significant control | |
| 2025-09-29 | SH01 | capital | Capital allotment shares | |
| 2025-09-17 | RESOLUTIONS | resolution | Resolution | |
| 2025-09-17 | MA | incorporation | Memorandum articles | |
| 2025-09-16 | RESOLUTIONS | resolution | Resolution | |
| 2025-09-02 | CERTNM | change-of-name | Certificate change of name company | |
| 2025-09-02 | CONNOT | change-of-name | Change of name notice | |
| 2025-05-02 | AA | accounts | Accounts with accounts type full | |
| 2025-01-13 | AP01 | officers | Appoint person director company with name date | |
| 2025-01-10 | TM01 | officers | Termination director company with name termination date | |
| 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 |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 16
- Capital events
- 3
- 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
+6.9%
£104,914,000 £112,173,000
-
Cash
-44.5%
£779,000 £432,000
-
Net assets
+88.3%
£26,180,000 £49,288,000
-
Employees
-12.5%
949 830
-
Operating profit
+1,091.1%
£909,000 £10,827,000
-
Profit before tax
+643.6%
£1,456,000 £10,827,000
-
Wages
-6.2%
£49,328,000 £46,253,000
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