Thornton Tomasetti Holdings UK Ltd
Registered name: THORNTON TOMASETTI HOLDINGS UK LTD
Thornton Tomasetti Holdings UK Ltd made £11.8m revenue and £569k profit in the year to 31 Dec 2025. read from filing text
Thornton Tomasetti Holdings UK Ltd’s revenue grew 13% to £11.8m in the year to 31 Dec 2025, with £569k profit and 0 employees. The company is classified under “activities of other holding companies” and is based in London; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- London, London
- Age
- 8 yrs · since 2018
- Type
- Private Limited Company
Pass-through vehicle. This looks like a holding, staffing or umbrella company. Its revenue and profit may largely pass through to or from other entities, so the figures may not reflect a standalone operating business. It is excluded from our opportunity lists.
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 is a wholly owned subsidiary of Thornton Thomasetti Inc, which is incorporated in the United States of America and has registered office of 51 Madison Avenue, New York, N.Y. 10010-1603, US”
Key figures
Badges are automated estimates derived from the filed figures — not statements of fact about the company.
Financial history
| Year to | 31 Dec 2022 | 31 Dec 2023 | 31 Dec 2024 | 31 Dec 2025 |
|---|---|---|---|---|
| Disclosure | Profit only | Profit only | Profit & lossread from filing text | Profit & lossread from filing text |
| Profit & loss | ||||
| Revenue (turnover) | — | — | £10.4m | £11.8m |
| Cost of sales | £4.5m | £4.1m | £3.5m | £4m |
| Gross profit | — | — | £6.9m | £7.8m |
| Operating profit | — | — | £650k | £890k |
| Profit before tax | — | — | £650k | £890k |
| Profit after tax | −£9.9k | −£11.3k | −£15.3k | £569k |
| Profit (best available) | −£9.9k | −£11.3k | −£15.3k | £569k |
| Staff costs | £0 | £0 | £0 | £0 |
| Employees (average) | 0 | 0 | 0 | 0 |
| Ratios | ||||
| Profit margin | — | — | −0.1% | 4.8% |
| Gross margin | — | — | 66.5% | 65.9% |
| Cash conversion | — | — | — | −43.6% |
| Growth (year on year) | ||||
| Revenue growth | — | — | — | ▲13.3% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | £493k | £532k | £384k | £805k |
| Net assets | — | £389k | £373k | £5.3m |
| Fixed assets | £379k | £493k | £1.5m | £1.1m |
| Current assets | — | — | £8.3m | £10.5m |
| Debtors | £0 | £0 | £0 | £0 |
| Deferred income | £8.4k | £9.6k | £10.6k | £10.9k |
| Cash from operations | — | — | — | −£388k |
| Source | FullAccounts · bulk data Jul 2024 | FullAccounts · bulk data Jul 2024 | FullAccounts · bulk data Sep 2025 | FullAccounts · bulk data Jul 2026 |
How the business works
- Profit margin
- 4.8%
- Profit ÷ revenue.
- Gross margin
- 65.9%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- —
- Revenue ÷ average employees.
- Profit per employee
- —
- Profit ÷ average employees.
- Cash conversion
- −43.6%
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- 9.1%
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- 0.1%
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- 0%
- 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
- ▲1308%
- Now £5.3m
- Cash at bank
- ▲110%
- Now £805k
- Headcount
- —
- Now 0
- Deferred income
- ▲3%
- Now £10.9k
- Fixed assets
- ▼27%
- Now £1.1m
Deferred income is reported together with accruals in this filing (“accruals and deferred income”), so it is an approximate signal only.
Group structure
Subsidiaries (2)
- Thornton Tomasetti Romsey LimitedRev. — · Profit £926k
- Thornton Tomasetti Warrington LimitedRev. — · Profit −£30.8k
From the Persons with Significant Control register (corporate controllers only).
Sources
Latest figures from FullAccounts for the year to 31 Dec 2025 (profit £569k), from the Companies House accounts bulk data published Jul 2026. Spotted an error? Request a correction.