Tetra Tech International Development Limited
Registered name: TETRA TECH INTERNATIONAL DEVELOPMENT LIMITED
Part of Tetra Tech, Inc. groupTetra Tech International Development Limited made £29.8m revenue and £68k profit in the year to 28 Sep 2025.
Tetra Tech International Development Limited’s revenue fell 2% to £29.8m in the year to 28 Sep 2025, with £68k profit and 85 employees. The company is classified under “management consultancy activities other than financial management” and is based in Berkshire; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- Berkshire, South East
- Age
- 27 yrs · since 1999
- Type
- Private Limited Company
Part of a group. The filing indicates this company sits within a group structure, so its results may depend on intra-group trading and it may be hard to replicate independently. From the filing: “The Company's immediate parent undertaking is Tetra Tech International Development Europe Limited a company incorporated in England and Wales. The Company's ultimate parent undertaking is Tetra Tech, ”
Key figures
Badges are automated estimates derived from the filed figures — not statements of fact about the company.
Financial history
| Year to | 30 Sep 2022 | 30 Sep 2023 | 30 Sep 2024 | 28 Sep 2025 |
|---|---|---|---|---|
| Disclosure | Full P&L | Full P&L | Full P&L | Full P&L |
| Profit & loss | ||||
| Revenue (turnover) | £28.2m | £22.9m | £30.5m | £29.8m |
| Cost of sales | £21.6m | £17.6m | £25.4m | £21.2m |
| Gross profit | £6.6m | £5.3m | £5.1m | £8.6m |
| Operating profit | £980k | −£1.1m | £677k | £449k |
| Profit before tax | £731k | −£1.1m | £701k | £458k |
| Profit after tax | £578k | −£929k | £610k | £68k |
| Profit (best available) | £578k | −£929k | £610k | £68k |
| Employees (average) | 98 | 89 | 90 | 85 |
| Ratios | ||||
| Profit margin | 2.1% | −4% | 2% | 0.2% |
| Gross margin | 23.3% | 23.1% | 16.6% | 28.8% |
| Revenue per employee | £288k | £258k | £338k | £351k |
| Profit per employee | £5.9k | −£10.4k | £6.8k | £800 |
| Growth (year on year) | ||||
| Revenue growth | — | ▼18.6% | ▲32.8% | ▼2.1% |
| Profit growth | — | ▼260.7% | — | ▼88.8% |
| Headcount growth | — | ▼9.2% | ▲1.1% | ▼5.6% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | £5.4m | £754k | £1.5m | £1.3m |
| Net assets | £9.4m | £8.6m | £9.3m | £9.4m |
| Fixed assets | £2.8m | £2.4m | £3.2m | £2.6m |
| Current assets | £12.5m | £12.3m | £14.4m | £14.1m |
| Debtors | £1.8m | £1m | £2.4m | £3m |
| Deferred income | £4.9m | £5m | £5.7m | £4.9m |
| Source | FullAccounts · bulk data Apr 2024 | FullAccounts · bulk data Apr 2024 | FullAccounts · bulk data Mar 2025 | FullAccounts · bulk data Mar 2026 |
How the business works
- Profit margin
- 0.2%
- Profit ÷ revenue.
- Gross margin
- 28.8%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £351k
- Revenue ÷ average employees.
- Profit per employee
- £800
- Profit ÷ average employees.
- Cash conversion
- —
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- 8.8%
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- 16.4%
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- 10.2%
- Money owed by customers. Low = customers pay quickly.
Balance-sheet signals
Year-on-year changes in filed balance-sheet items. They can hint at momentum (or investment) but are not revenue or profit and must not be read as such.
- Net assets
- ▲1%
- Now £9.4m
- Cash at bank
- ▼18%
- Now £1.3m
- Headcount
- ▼6%
- Now 85
- Deferred income
- ▼14%
- Now £4.9m
- Fixed assets
- ▼17%
- Now £2.6m
Deferred income is reported together with accruals in this filing (“accruals and deferred income”), so it is an approximate signal only.
Group structure
Ownership chain
- Tetra Tech, Inc. (registered outside the UK register)ultimate parent75–100%
- Tetra Tech UK Holdings Limited75–100%
- Tetra Tech UK Limited75–100%
- Tetra Tech International Development Europe Limited75–100%
- Tetra Tech International Development Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Sister companies (1)
- Tetra Tech International Development Projects LimitedRev. — · Profit £1k
From the Persons with Significant Control register (corporate controllers only).
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Sources
Latest figures from FullAccounts for the year to 28 Sep 2025 (profit £68k), from the Companies House accounts bulk data published Mar 2026. Spotted an error? Request a correction.
Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.