Plexus Innovation Limited
Registered name: PLEXUS INNOVATION LIMITED
Part of Mariner Topco Limited groupPlexus Innovation Limited made £289k profit in the year to 31 Dec 2024 (revenue not disclosed).
Plexus Innovation Limited reported £289k profit in the year to 31 Dec 2024; its revenue was not disclosed. It had 5 employees. The company is classified under “installation of industrial machinery and equipment” and is based in Ross on Wye; we hold 3 years of its filed accounts.
- Status
- Active
- Location
- Ross on Wye, West Midlands
- Age
- 8 yrs · since 2017
- 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. From the filing: “HSL Compliance Holdings Limited”
Key figures
This company published its profit but not its turnover, so revenue and margins are not disclosed. We never estimate them.
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 |
|---|---|---|---|
| Disclosure | No P&L | Profit only | Profit only |
| Profit & loss | |||
| Revenue (turnover) | — | — | — |
| Profit after tax | — | −£345k | £289k |
| Profit (best available) | — | −£345k | £289k |
| Employees (average) | 7 | 7 | 5 |
| Ratios | |||
| Profit margin | — | — | — |
| Profit per employee | — | −£49.3k | £57.8k |
| Growth (year on year) | |||
| Headcount growth | — | 0% | ▼28.6% |
| Balance sheet — indirect signals, not revenue | |||
| Cash at bank | £71.8k | £8.8k | £19.3k |
| Net assets | −£214k | −£543k | −£259k |
| Fixed assets | £7.6k | £3.8k | £2.1k |
| Current assets | £345k | £201k | £176k |
| Debtors | £105k | £51.3k | £54.4k |
| Deferred income | £1.4k | £48.3k | £21k |
| Source | FilletedAccounts · bulk data Sep 2024 | FilletedAccounts · bulk data Sep 2024 | FullAccounts · bulk data Dec 2025 |
How the business works
- Profit margin
- —
- Profit ÷ revenue.
- Gross margin
- —
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- —
- Revenue ÷ average employees.
- Profit per employee
- £57.8k
- 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 −£259k
- Cash at bank
- ▲119%
- Now £19.3k
- Headcount
- ▼29%
- Now 5
- Deferred income
- ▼57%
- Now £21k
- Fixed assets
- ▼45%
- Now £2.1k
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
- Mariner Topco Limitedultimate parent75–100%
- Mariner Midco 1 Limited75–100%
- Mariner Midco 2 Limited75–100%
- Mariner Bidco Limited75–100%
- HSL Compliance Group Limited75–100%
- HSL Compliance Holdings Limited75–100%
- Plexus Innovation Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Sister companies (16)
- Albanyoak LimitedFigures not disclosed
- Apc Compliance LimitedRev. — · Profit £182k
- Coral Environmental LtdFigures not disclosed
- Crosmill Holdings LtdRev. — · Profit £987k
- Houseman Environmental LimitedRev. — · Profit £507k
- HSL Compliance (Northern Ireland) LimitedFigures not disclosed
- HSL Compliance Advanced Water Technologies LtdRev. — · Profit £704k
- HSL Compliance Enitial LtdFigures not disclosed
- HSL Compliance LtdFigures not disclosed
- HSL Inspection and Testing LtdFigures not disclosed
- Ice Plumbing & Water Services LimitedFigures not disclosed
- Jordan Environmental LimitedFigures not disclosed
- Legionella Control International LimitedFigures not disclosed
- R J Urmson Group LimitedRev. — · Profit £650k
- Saferspaces LimitedFigures not disclosed
- Treatment 4 Water LimitedFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
Similar profitable businesses
- Birmingham Optical Group LimitedBirmingham · Installation of industrial machinery and equipment
- Revenue
- £20.6m
- Profit
- £4.8m
- Staff
- 68
- Ais Vanguard LimitedWigan · Installation of industrial machinery and equipment
- Revenue
- £30.1m
- Profit
- £4m
- Staff
- 137
- Logistex Europe LtdKettering · Installation of industrial machinery and equipment
- Revenue
- £68.9m
- Profit
- £3.3m
- Staff
- 287
- Gvav LimitedLondon · Installation of industrial machinery and equipment
- Revenue
- £61.5m
- Profit
- £2.9m
- Staff
- 159
- Kardex Systems (UK) LimitedHertford · Installation of industrial machinery and equipment
- Revenue
- £27.5m
- Profit
- £2.5m
- Staff
- 81
- Associated Security Solutions LimitedManchester · Installation of industrial machinery and equipment
- Revenue
- £21.6m
- Profit
- £2.3m
- Staff
- 158
Sources
Latest figures from FullAccounts for the year to 31 Dec 2024 (profit £289k), from the Companies House accounts bulk data published Dec 2025. 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.