Sirius Engineering Group Ltd
Registered name: SIRIUS ENGINEERING GROUP LTD
Part of Sirius Eot Limited groupSirius Engineering Group Ltd made £2.8m profit in the year to 31 Dec 2025 (revenue not disclosed).
Sirius Engineering Group Ltd reported £2.8m profit in the year to 31 Dec 2025, up 76% on the year before; its revenue was not disclosed. It had 243 employees. The company is classified under “activities of head offices” and is based in Durham; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- Durham, North East
- Age
- 23 yrs · since 2003
- 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
This company published its profit but not its turnover, so revenue and margins are not disclosed. We never estimate them.
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 only | Profit only |
| Profit & loss | ||||
| Revenue (turnover) | — | — | — | — |
| Profit after tax | £9.9m | £7.3m | £1.6m | £2.8m |
| Profit (best available) | £9.9m | £7.3m | £1.6m | £2.8m |
| Employees (average) | 194 | 222 | 230 | 243 |
| Ratios | ||||
| Profit margin | — | — | — | — |
| Profit per employee | £50.8k | £33k | £6.8k | £11.4k |
| Growth (year on year) | ||||
| Profit growth | — | ▼25.7% | ▼78.5% | ▲76.2% |
| Headcount growth | — | ▲14.4% | ▲3.6% | ▲5.7% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | £4m | £0 | — | — |
| Net assets | £807k | £2m | £2m | £1.2m |
| Fixed assets | £7.2m | £10.5m | £12.5m | £12m |
| Current assets | £5.2m | £871k | — | — |
| Debtors | £1.2m | £871k | £794k | £1m |
| Source | FullAccounts · bulk data Sep 2024 | FullAccounts · bulk data Sep 2024 | FullAccounts · bulk data Sep 2025 | FullAccounts · bulk data Sep 2026 |
How the business works
- Profit margin
- —
- Profit ÷ revenue.
- Gross margin
- —
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- —
- Revenue ÷ average employees.
- Profit per employee
- £11.4k
- 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
- ▼39%
- Now £1.2m
- Cash at bank
- —
- Now —
- Headcount
- ▲6%
- Now 243
- Deferred income
- —
- Now —
- Fixed assets
- ▼4%
- Now £12m
Group structure
Ownership chain
- Sirius Eot Limitedultimate parent75–100%
- Sirius Engineering Group Ltdthis company
Bands show the share of ownership each company holds in the one below it.
Subsidiaries (9)
- Sirius Civil Engineering LimitedRev. £29.1m · Profit £728k
- Sirius Remediation LimitedRev. £26.9m · Profit £1.8m
- Sirius Demolition LtdFigures not disclosed
- Sirius Drilling LtdFigures not disclosed
- Sirius Environmental LtdFigures not disclosed
- Sirius Geotechnical LtdFigures not disclosed
- Sirius Planning LtdFigures not disclosed
- Sirius Plant LtdFigures not disclosed
- Sirius Renewable Energy LtdFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
Sources
Latest figures from FullAccounts for the year to 31 Dec 2025 (profit £2.8m), from the Companies House accounts bulk data published Sep 2026. Spotted an error? Request a correction.
Updated from Companies House on 23 Oct 2026
Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.