STM (H) Limited
Registered name: STM (H) LIMITED
Part of Amber Infrastructure Group Holdings Limited groupSTM (H) Limited made £2.1m revenue and £372k profit in the year to 31 Dec 2025.
STM (H) Limited’s revenue grew 19% to £2.1m in the year to 31 Dec 2025, with £372k profit. The company is classified under “activities of head offices” and is based in London; we hold 3 years of its filed accounts.
- Status
- Active
- Location
- London, London
- Age
- 24 yrs · since 2002
- 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.
Key figures
Badges are automated estimates derived from the filed figures — not statements of fact about the company.
Financial history
| Year to | 31 Dec 2023 | 31 Dec 2024 | 31 Dec 2025 |
|---|---|---|---|
| Disclosure | Full P&L | Full P&L | Full P&L |
| Profit & loss | |||
| Revenue (turnover) | £1.8m | £1.7m | £2.1m |
| Cost of sales | −£1.3m | −£1.2m | −£1.6m |
| Gross profit | £526k | £543k | £465k |
| Operating profit | £398k | £411k | £291k |
| Profit before tax | £820k | £840k | £631k |
| Profit after tax | £552k | £539k | £372k |
| Profit (best available) | £552k | £539k | £372k |
| Employees (average) | — | — | — |
| Ratios | |||
| Profit margin | 30.7% | 31.4% | 18.1% |
| Gross margin | 29.3% | 31.6% | 22.6% |
| Growth (year on year) | |||
| Revenue growth | — | ▼4.3% | ▲19.4% |
| Profit growth | — | ▼2.2% | ▼31% |
| Balance sheet — indirect signals, not revenue | |||
| Net assets | — | — | — |
| Source | Accounts · bulk data May 2025 | Accounts · bulk data May 2025 | Accounts · bulk data May 2026 |
How the business works
- Profit margin
- 18.1%
- Profit ÷ revenue.
- Gross margin
- 22.6%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- —
- Revenue ÷ average employees.
- Profit per employee
- —
- Profit ÷ average employees.
- Cash conversion
- —
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- —
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- —
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- —
- 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
- —
- Now —
- Cash at bank
- —
- Now —
- Headcount
- —
- Now —
- Deferred income
- —
- Now —
- Fixed assets
- —
- Now —
Group structure
Ownership chain
- Amber Infrastructure Group Holdings Limitedultimate parent75–100%
- Amber Infrastructure Holdings Two Limited75–100%
- Amber Infrastructure Holdings Limited75–100%
- Amber Infrastructure Group Limited75–100%
- International Public Partnerships GP Limited75–100%
- Ipp Holdings 1 Limited75–100%
- Ipp Bond Limited75–100%
- Bootle Derby Holdings Limited75–100%
- Ipp Properties Limited75–100%
- STM (H) Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Subsidiaries (3)
- Black Country STM LimitedFigures not disclosed
- Ipp Properties (ST Thomas More) LimitedFigures not disclosed
- ST Thomas More LimitedFigures not disclosed
Sister companies (9)
- Derbyshire Courts LimitedRev. £5.6m · Profit £3.5m
- Derbyshire Schools LimitedRev. £3.5m · Profit £1.7m
- NW (BBP) LimitedRev. £1.4m · Profit £883k
- Derbyshire Courts (Property Co-Trustee) LimitedFigures not disclosed
- Ipp (Derbyshire Courts) LimitedFigures not disclosed
- Ipp Properties (Derbyshire Schools) LimitedFigures not disclosed
- Ipp Properties (Rhyl ST Asaph) LimitedFigures not disclosed
- Peak Courts LimitedFigures not disclosed
- Rhyl ST Asaph LimitedFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
Sources
Latest figures from accounts for the year to 31 Dec 2025 (profit £372k), from the Companies House accounts bulk data published May 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.