Isotank Services Limited
Registered name: ISOTANK SERVICES LIMITED
Part of Boasso America Corporation groupIsotank Services Limited made £2m revenue and a £475k loss in the year to 31 Dec 2025.
Isotank Services Limited’s revenue fell 1% to £2m in the year to 31 Dec 2025, with a loss of £475k and 36 employees. The company is classified under “freight transport by road” and is based in Redcar; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- Redcar, North East
- Age
- 47 yrs · since 1979
- 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 | Full P&L | Full P&L | Full P&L | Full P&L |
| Profit & loss | ||||
| Revenue (turnover) | £2.5m | £2.1m | £2m | £2m |
| Cost of sales | £986k | £818k | £685k | £823k |
| Gross profit | £1.5m | £1.3m | £1.3m | £1.1m |
| Operating profit | £219k | £29k | −£913k | −£1.3m |
| Profit before tax | £1.1m | £1.1m | £426k | −£401k |
| Profit after tax | £1.2m | £1.1m | £220k | −£475k |
| Profit (best available) | £1.2m | £1.1m | £220k | −£475k |
| Staff costs | £1.8m | £1.5m | £1.9m | £2.2m |
| Employees (average) | 26 | 28 | 35 | 36 |
| Ratios | ||||
| Profit margin | 46.3% | 53% | 11.2% | −24.3% |
| Gross margin | 60.8% | 61.3% | 65.1% | 57.9% |
| Revenue per employee | £96.6k | £75.6k | £56.2k | £54.3k |
| Profit per employee | £44.7k | £40.1k | £6.3k | −£13.2k |
| Growth (year on year) | ||||
| Revenue growth | — | ▼15.8% | ▼7% | ▼0.6% |
| Profit growth | — | ▼3.6% | ▼80.4% | ▼315.8% |
| Headcount growth | — | ▲7.7% | ▲25% | ▲2.9% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | £1.1m | £856k | £792k | £53.9k |
| Net assets | £8.3m | £9.4m | £9.6m | £9.2m |
| Fixed assets | £6.5m | £5.8m | £8.1m | £7.5m |
| Current assets | £12.2m | £11.6m | £12.4m | £13.8m |
| Debtors | £11.9k | £5k | £9.7k | £3.3k |
| Deferred income | £126k | £74.2k | £80.1k | £42.6k |
| Source | FullAccounts · bulk data Sep 2024 | FullAccounts · bulk data Sep 2024 | FullAccounts · bulk data Oct 2025 | FullAccounts · bulk data Sep 2026 |
How the business works
- Profit margin
- −24.3%
- Profit ÷ revenue.
- Gross margin
- 57.9%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £54.3k
- Revenue ÷ average employees.
- Profit per employee
- −£13.2k
- Profit ÷ average employees.
- Cash conversion
- —
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- 384.6%
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- 2.2%
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- 0.2%
- 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 £9.2m
- Cash at bank
- ▼93%
- Now £53.9k
- Headcount
- ▲3%
- Now 36
- Deferred income
- ▼47%
- Now £42.6k
- Fixed assets
- ▼7%
- Now £7.5m
Deferred income is reported together with accruals in this filing (“accruals and deferred income”), so it is an approximate signal only.
Group structure
Ownership chain
- Boasso America Corporation (registered outside the UK register)ultimate parent75–100%
- Depot Connect International Limited75–100%
- Depot Connect International UK Limited75–100%
- Isotank Services Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Subsidiaries (7)
- Isotank Depot Services LimitedRev. £14.1m · Profit £1.4m
- Isotank Transport Services LimitedRev. £11.3m · Profit −£515k
- Atlantic Tank Clean Barry LimitedFigures not disclosed
- Isotank (2006) LimitedFigures not disclosed
- Isotank (2010) LimitedFigures not disclosed
- PM Rees & Sons 2000 LimitedFigures not disclosed
- Tanktainer Thurroclean (Middlesbrough) LimitedFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
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Sources
Latest figures from FullAccounts for the year to 31 Dec 2025 (profit −£475k), 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.