Diesel Marine International Limited
Registered name: DIESEL MARINE INTERNATIONAL LIMITED
Diesel Marine International Limited made £13.6m revenue and a £727k loss in the year to 31 Dec 2025. read from filing text
Diesel Marine International Limited’s revenue fell 24% to £13.6m in the year to 31 Dec 2025, with a loss of £727k and 138 employees. The company is classified under “activities of head offices” and is based in Cardiff; we hold 3 years of its filed accounts.
- Status
- Active - Proposal to Strike off
- Location
- Cardiff, Wales
- Age
- 25 yrs · since 2001
- 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.
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&Lread from filing text | Full P&Lread from filing text | Full P&Lread from filing text |
| Profit & loss | |||
| Revenue (turnover) | £18.5m | £17.9m | £13.6m |
| Cost of sales | £12.7m | £11.9m | £9.6m |
| Gross profit | £5.8m | £6m | £4m |
| Operating profit | £543k | £510k | −£852k |
| Profit before tax | £332k | £329k | −£741k |
| Profit after tax | £175k | £206k | −£727k |
| Profit (best available) | £175k | £206k | −£727k |
| Employees (average) | 164 | 145 | 138 |
| Ratios | |||
| Profit margin | 0.9% | 1.1% | −5.3% |
| Gross margin | 31.5% | 33.6% | 29.2% |
| Revenue per employee | £113k | £123k | £98.4k |
| Profit per employee | £1.1k | £1.4k | −£5.3k |
| Growth (year on year) | |||
| Revenue growth | — | ▼3.2% | ▼24% |
| Profit growth | — | ▲17.7% | ▼452.9% |
| Headcount growth | — | ▼11.6% | ▼4.8% |
| Balance sheet — indirect signals, not revenue | |||
| Cash at bank | £61k | £15k | £68k |
| Net assets | £1.9m | £1.7m | £1.8m |
| Fixed assets | £5.4m | £5.3m | £5.3m |
| Current assets | £594k | £289k | £431k |
| Debtors | £20k | −£4k | £14k |
| Deferred income | £32k | £79k | £8k |
| Source | FullAccounts · bulk data Sep 2025 | FullAccounts · bulk data Sep 2025 | FullAccounts · bulk data Sep 2026 |
How the business works
- Profit margin
- −5.3%
- Profit ÷ revenue.
- Gross margin
- 29.2%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £98.4k
- Revenue ÷ average employees.
- Profit per employee
- −£5.3k
- Profit ÷ average employees.
- Cash conversion
- —
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- 39.2%
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- 0.1%
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- 0.1%
- 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
- ▲5%
- Now £1.8m
- Cash at bank
- ▲353%
- Now £68k
- Headcount
- ▼5%
- Now 138
- Deferred income
- ▼90%
- Now £8k
- Fixed assets
- ▲0%
- Now £5.3m
Deferred income is reported together with accruals in this filing (“accruals and deferred income”), so it is an approximate signal only.
Group structure
Subsidiaries (5)
- Highland Electroplaters LimitedFigures not disclosed
- Landon Engineering (Castle Works) LimitedFigures not disclosed
- Spiro-Gills Thermal Products LtdFigures not disclosed
- Valiant Sheep LimitedFigures not disclosed
- W.M. Codd LimitedFigures 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 −£727k), 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.