Si Green UK Limited
Registered name: SI GREEN UK LIMITED
Part of Ambienthesis S.P.A groupSi Green UK Limited made £471k revenue and a £446k loss in the year to 31 Dec 2025. read from filing text
Si Green UK Limited’s revenue fell 93% to £471k in the year to 31 Dec 2025, with a loss of £446k and 1 employee. The company is classified under “buying and selling of own real estate” and is based in Enterprise Park Swansea; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- Enterprise Park Swansea, Wales
- Age
- 33 yrs · since 1993
- 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.
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 | No P&L | Full P&Lread from filing text | Full P&Lread from filing text | Full P&Lread from filing text |
| Profit & loss | ||||
| Revenue (turnover) | — | £18.3m | £6.4m | £471k |
| Cost of sales | — | £17.4m | £7.1m | £439k |
| Gross profit | — | £915k | −£703k | £32.1k |
| Operating profit | — | £603k | −£1.1m | −£292k |
| Profit before tax | — | £431k | −£1.3m | −£446k |
| Profit (best available) | — | £431k | −£1.3m | −£446k |
| Employees (average) | 2 | 2 | 1 | 1 |
| Ratios | ||||
| Profit margin | — | 2.4% | −19.9% | −94.8% |
| Gross margin | — | 5% | −11% | 6.8% |
| Revenue per employee | — | £9.1m | £6.4m | £471k |
| Profit per employee | — | £216k | −£1.3m | −£446k |
| Growth (year on year) | ||||
| Revenue growth | — | — | ▼65.1% | ▼92.6% |
| Profit growth | — | — | ▼394.3% | — |
| Headcount growth | — | 0% | ▼50% | 0% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | £577k | £849k | £489k | £136k |
| Net assets | — | — | £373k | — |
| 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
- −94.8%
- Profit ÷ revenue.
- Gross margin
- 6.8%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £471k
- Revenue ÷ average employees.
- Profit per employee
- −£446k
- 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
- ▼72%
- Now £136k
- Headcount
- 0%
- Now 1
- Deferred income
- —
- Now —
- Fixed assets
- —
- Now —
Group structure
Ownership chain
- Ambienthesis S.P.A (registered outside the UK register)ultimate parent75–100%
- Si Green UK Limitedthis company
Bands show the share of ownership each company holds in the one below it.
From the Persons with Significant Control register (corporate controllers only).
Similar profitable businesses
- Wolverhampton I54 Real Estate LimitedWolverhampton · Buying and selling of own real estate
- Revenue
- £472k
- Profit
- £60k
- Staff
- —
- Chelmsford Van Hire LimitedChelmsford · Buying and selling of own real estate
- Revenue
- £473k
- Profit
- £120k
- Staff
- 3
- Forestate UK LtdTamworth · Buying and selling of own real estate
- Revenue
- £483k
- Profit
- £156k
- Staff
- —
- Thames City N9F LtdLondon · Buying and selling of own real estate
- Revenue
- £451k
- Profit
- £140k
- Staff
- 2
- Sea Lane Property LtdPontypridd · Buying and selling of own real estate
- Revenue
- £493k
- Profit
- £31.3k
- Staff
- 13
- Cestrian Estates Ltd.Co. Durham · Buying and selling of own real estate
- Revenue
- £513k
- Profit
- £306k
- Staff
- 2
Sources
Latest figures from FullAccounts for the year to 31 Dec 2025 (profit −£446k), from the Companies House accounts bulk data published Sep 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.