Subsea Technology & Rentals Limited
Registered name: SUBSEA TECHNOLOGY & RENTALS LIMITED
Part of Star Neptune Topco Limited groupSubsea Technology & Rentals Limited made £23.6m revenue and £10m profit in the year to 31 Dec 2025.
Subsea Technology & Rentals Limited’s revenue fell 3% to £23.6m in the year to 31 Dec 2025, with £10m profit and 87 employees. The company is classified under “renting and leasing of other machinery, equipment and tangible goods” and is based in Aberdeen; we hold 5 years of its filed accounts.
- Status
- Active
- Location
- Aberdeen, Scotland
- Age
- 15 yrs · since 2011
- 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 2021 | 31 Dec 2022 | 31 Dec 2023 | 31 Dec 2024 | 31 Dec 2025 |
|---|---|---|---|---|---|
| Disclosure | Profit only | Profit only | Full P&L | Full P&L | Full P&L |
| Profit & loss | |||||
| Revenue (turnover) | — | — | £21.7m | £24.3m | £23.6m |
| Cost of sales | — | — | −£4.7m | −£8m | −£15.4m |
| Gross profit | — | — | £17m | £16.3m | £8.2m |
| Operating profit | — | — | £9m | £16m | £13.9m |
| Profit before tax | — | — | £8.1m | £15.1m | £13.4m |
| Profit after tax | £2.2m | £6m | £6.1m | £11.4m | £10m |
| Profit (best available) | £2.2m | £6m | £6.1m | £11.4m | £10m |
| Employees (average) | 0 | 0 | 71 | 81 | 87 |
| Ratios | |||||
| Profit margin | — | — | 28.2% | 46.7% | 42.4% |
| Gross margin | — | — | 78.3% | 66.9% | 34.8% |
| Revenue per employee | — | — | £306k | £300k | £271k |
| Profit per employee | — | — | £86.3k | £140k | £115k |
| Growth (year on year) | |||||
| Revenue growth | — | — | — | ▲11.9% | ▼2.9% |
| Profit growth | — | ▲176.5% | ▲2.7% | ▲85.4% | ▼11.9% |
| Headcount growth | — | — | — | ▲14.1% | ▲7.4% |
| Balance sheet — indirect signals, not revenue | |||||
| Cash at bank | £970k | £67.3k | — | — | — |
| Net assets | £13.5m | £19.5m | — | — | — |
| Fixed assets | £8.4m | £14.3m | — | — | — |
| Current assets | £10m | £14.7m | — | — | — |
| Debtors | £2.6m | £3.4m | — | — | — |
| Deferred income | £537k | £908k | — | — | — |
| Source | Accounts · bulk data Oct 2023 | Accounts · bulk data Oct 2023 | Accounts · bulk data Jul 2025 | Accounts · bulk data Jul 2025 | Accounts · bulk data Aug 2026 |
How the business works
- Profit margin
- 42.4%
- Profit ÷ revenue.
- Gross margin
- 34.8%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £271k
- Revenue ÷ average employees.
- Profit per employee
- £115k
- 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
- ▲7%
- Now 87
- Deferred income
- —
- Now —
- Fixed assets
- —
- Now —
Group structure
Ownership chain
- Star Neptune Topco Limitedultimate parent75–100%
- Star Neptune Holdco Limited75–100%
- Star Neptune Midco Limited75–100%
- Star Neptune Bidco Limited75–100%
- Project Poseidon Topco Limited75–100%
- Project Poseidon Midco Limited75–100%
- Project Poseidon Bidco Limited75–100%
- Subsea Technology & Rentals 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).
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Sources
Latest figures from accounts for the year to 31 Dec 2025 (profit £10m), from the Companies House accounts bulk data published Aug 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.