Collins Walker Limited
Registered name: COLLINS WALKER LIMITED
Part of Sdi Group PLC groupCollins Walker Limited does not publish its revenue or profit. Its accounts to 31 Mar 2025 show net assets of £899k and 5 employees.
Collins Walker Limited did not publish its revenue or profit — small companies aren’t required to file a profit & loss account. Its accounts for the year to 31 Mar 2025 showed net assets of £899k and 5 employees. The company is classified under “manufacture of steam generators, except central heating hot water boilers” and is based in Cambridge; we hold 3 years of its filed accounts.
- Status
- Active
- Location
- Cambridge, East of England
- Age
- 53 yrs · since 1972
- 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
Revenue not disclosed
Collins Walker Limited’s accounts for the year to 31 Mar 2025 contain a balance sheet but no profit & loss account, so its revenue and profit are not public. UK small and micro-entity companies are not required to publish a P&L — this is normal and says nothing about how the business is performing.
We never estimate revenue. Below you’ll find the balance-sheet figures that were filed — useful as indirect signals of momentum, but they are not revenue or profit.
- Employees
- 5
- Net assets
- £899k
Badges are automated estimates derived from the filed figures — not statements of fact about the company.
Financial history
| Year to | 31 Mar 2023 | 31 Mar 2024 | 31 Mar 2025 |
|---|---|---|---|
| Disclosure | No P&L | No P&L | No P&L |
| Profit & loss | |||
| Revenue (turnover) | — | — | — |
| Profit (best available) | — | — | — |
| Employees (average) | 4 | 5 | 5 |
| Ratios | |||
| Profit margin | — | — | — |
| Growth (year on year) | |||
| Headcount growth | — | ▲25% | 0% |
| Balance sheet — indirect signals, not revenue | |||
| Cash at bank | — | £775k | £266k |
| Net assets | £549k | £770k | £899k |
| Fixed assets | £134k | £13.3k | £10.4k |
| Current assets | £690k | £1.2m | £967k |
| Debtors | — | £336k | £48.2k |
| Source | FullAccounts · bulk data Jul 2024 | FullAccounts · bulk data Jul 2024 | FullAccounts · bulk data Aug 2025 |
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
- ▲17%
- Now £899k
- Cash at bank
- ▼66%
- Now £266k
- Headcount
- 0%
- Now 5
- Deferred income
- —
- Now —
- Fixed assets
- ▼21%
- Now £10.4k
Group structure
Ownership chain
- Sdi Group PLCultimate parent75–100%
- Collins Walker Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Sister companies (22)
- Applied Thermal Control LimitedFigures not disclosed
- Astles Control Systems LimitedFigures not disclosed
- Atik Cameras LimitedFigures not disclosed
- Chell Instruments LimitedFigures not disclosed
- Ducthub LimitedFigures not disclosed
- Fistreem International LimitedFigures not disclosed
- Fraser Anti-Static Techniques LimitedFigures not disclosed
- Graticules Optics LimitedFigures not disclosed
- Hillmead Technology LimitedFigures not disclosed
- Inspecvision LimitedFigures not disclosed
- Labhub LimitedFigures not disclosed
- Lte Scientific LimitedFigures not disclosed
- Monmouth Scientific LimitedFigures not disclosed
- MPB Industries LimitedFigures not disclosed
- Opus Instruments LtdFigures not disclosed
- Peak Sensors (Holding) LimitedFigures not disclosed
- Safelab Systems LimitedFigures not disclosed
- Scientific Vacuum Systems LtdFigures not disclosed
- Sentek LimitedFigures not disclosed
- Severn Thermal Solutions LimitedFigures not disclosed
- Synoptics LimitedFigures not disclosed
- Thermal Exchange 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 Mar 2025, from the Companies House accounts bulk data published Aug 2025. Spotted an error? Request a correction.
Updated from Companies House on 16 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.