Tube Developments Limited
Registered name: TUBE DEVELOPMENTS LIMITED
Part of Buhlmann UK Limited groupTube Developments Limited made £21.2m revenue and £1m profit in the year to 30 Sep 2025.
Tube Developments Limited’s revenue fell 15% to £21.2m in the year to 30 Sep 2025, with £1m profit and 57 employees. The company is classified under “other manufacturing” and is based in Kilsyth; we hold 2 years of its filed accounts.
- Status
- Active
- Location
- Kilsyth, Scotland
- Age
- 61 yrs · since 1965
- 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 | 30 Sep 2024 | 30 Sep 2025 |
|---|---|---|
| Disclosure | Full P&L | Full P&L |
| Profit & loss | ||
| Revenue (turnover) | £25m | £21.2m |
| Cost of sales | £12.8m | £12m |
| Gross profit | £12.2m | £9.1m |
| Operating profit | £2.2m | £899k |
| Profit before tax | £2.6m | £1.4m |
| Profit after tax | £1.9m | £1m |
| Profit (best available) | £1.9m | £1m |
| Staff costs | £9m | £7.2m |
| Employees (average) | 57 | 57 |
| Ratios | ||
| Profit margin | 7.6% | 4.9% |
| Gross margin | 48.8% | 43.3% |
| Revenue per employee | £438k | £371k |
| Profit per employee | £33.1k | £18k |
| Cash conversion | −50.1% | −186.5% |
| Growth (year on year) | ||
| Revenue growth | — | ▼15.3% |
| Profit growth | — | ▼45.5% |
| Headcount growth | — | 0% |
| Balance sheet — indirect signals, not revenue | ||
| Cash at bank | £14.1m | £14.3m |
| Net assets | £29.6m | £30.6m |
| Fixed assets | £3.6m | £3.6m |
| Current assets | £33.5m | £31.9m |
| Debtors | £4.2m | £3.8m |
| Cash from operations | −£1.1m | −£1.7m |
| Source | FullAccounts · bulk data Sep 2026 | FullAccounts · bulk data Sep 2026 |
How the business works
- Profit margin
- 4.9%
- Profit ÷ revenue.
- Gross margin
- 43.3%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £371k
- Revenue ÷ average employees.
- Profit per employee
- £18k
- Profit ÷ average employees.
- Cash conversion
- −186.5%
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- 16.8%
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- —
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- 17.8%
- 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
- ▲3%
- Now £30.6m
- Cash at bank
- ▲1%
- Now £14.3m
- Headcount
- 0%
- Now 57
- Deferred income
- —
- Now —
- Fixed assets
- ▲0%
- Now £3.6m
Group structure
Ownership chain
- Buhlmann UK Limitedultimate parent75–100%
- Tube Developments 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 FullAccounts for the year to 30 Sep 2025 (profit £1m), 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.