Rolls-Royce Submarines Limited
Registered name: ROLLS-ROYCE SUBMARINES LIMITED
Part of Rolls-Royce Holdings PLC groupRolls-Royce Submarines Limited made £1.4bn revenue and £111m profit in the year to 31 Dec 2025.
Rolls-Royce Submarines Limited’s revenue fell 2% to £1.4bn in the year to 31 Dec 2025, with £111m profit. The company is classified under “manufacture of steam generators, except central heating hot water boilers” and is based in Derby; we hold 3 years of its filed accounts.
- Status
- Active
- Location
- Derby
- Age
- 67 yrs · since 1959
- Type
- Private Limited Company
Key figures
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) | £902m | £1.4bn | £1.4bn |
| Cost of sales | −£763m | −£1.2bn | −£1.2bn |
| Gross profit | £139m | £183m | £158m |
| Operating profit | £99.1m | £135m | £123m |
| Profit before tax | £116m | £159m | £145m |
| Profit after tax | £94.7m | £121m | £111m |
| Profit (best available) | £94.7m | £121m | £111m |
| Employees (average) | — | — | — |
| Ratios | |||
| Profit margin | 10.5% | 8.8% | 8.1% |
| Gross margin | 15.4% | 13.2% | 11.6% |
| Growth (year on year) | |||
| Revenue growth | — | ▲53% | ▼1.5% |
| Profit growth | — | ▲27.6% | ▼8.5% |
| Balance sheet — indirect signals, not revenue | |||
| Net assets | — | — | — |
| Source | Accounts · bulk data Aug 2025 | Accounts · bulk data Aug 2025 | Accounts · bulk data Sep 2026 |
How the business works
- Profit margin
- 8.1%
- Profit ÷ revenue.
- Gross margin
- 11.6%
- 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
- Rolls-Royce Holdings PLCultimate parent75–100%
- Rolls-Royce PLC75–100%
- Rolls-Royce Submarines Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Sister companies (19)
- Sharing in Growth UK LimitedRev. £10.6m · Profit £2.9m
- Rolls-Royce SMR LimitedRev. £0 · Profit −£117m
- Bristol Siddeley Engines LimitedLiquidationFigures not disclosed
- Rolls-Royce Aero Engine Services LimitedLiquidationFigures not disclosed
- Rolls-Royce Commercial Aero Engines LimitedLiquidationFigures not disclosed
- Rolls-Royce Controls and Data Services LimitedFigures not disclosed
- Rolls-Royce Fuel Cell Systems LimitedLiquidationFigures not disclosed
- Rolls-Royce General Partner LimitedLiquidationFigures not disclosed
- Rolls-Royce Group LimitedFigures not disclosed
- Rolls-Royce Industries LimitedFigures not disclosed
- Rolls-Royce International LimitedFigures not disclosed
- Rolls-Royce Leasing LimitedFigures not disclosed
- Rolls-Royce Military Aero Engines LimitedLiquidationFigures not disclosed
- Rolls-Royce Power Engineering LimitedFigures not disclosed
- Rolls-Royce Retirement Savings Trust LimitedFigures not disclosed
- Rolls-Royce Total Care Services LimitedFigures not disclosed
- Rolls-Royce UK Pension Fund Trustees LimitedFigures not disclosed
- Vinters LimitedFigures not disclosed
- Yocova Private LtdFigures 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 £111m), from the Companies House accounts bulk data published Sep 2026. Spotted an error? Request a correction.
Updated from Companies House on 24 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.