Renewable Energy Systems Holdings Limited
Registered name: RENEWABLE ENERGY SYSTEMS HOLDINGS LIMITED
Renewable Energy Systems Holdings Limited made £1.4bn revenue and £6.2m profit in the year to 31 Oct 2025.
Renewable Energy Systems Holdings Limited’s revenue was £1.4bn in the year to 31 Oct 2025, with £6.2m profit and 4,841 employees. The company is classified under “activities of head offices” and is based in Kings Langley; we hold 2 years of its filed accounts.
- Status
- Active
- Location
- Kings Langley, East of England
- Age
- 23 yrs · since 2003
- 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 Oct 2023 | 31 Oct 2025 |
|---|---|---|
| Disclosure | Full P&L | Full P&L |
| Profit & loss | ||
| Revenue (turnover) | £1bn | £1.4bn |
| Cost of sales | −£920m | −£1.2bn |
| Gross profit | £102m | £208m |
| Operating profit | −£11.2m | −£11.7m |
| Profit before tax | £5.9m | £4.7m |
| Profit after tax | £3.4m | £6.2m |
| Profit (best available) | £3.4m | £6.2m |
| Employees (average) | 2,334 | 4,841 |
| Ratios | ||
| Profit margin | 0.3% | 0.4% |
| Gross margin | 10% | 14.4% |
| Revenue per employee | £438k | £299k |
| Profit per employee | £1.5k | £1.3k |
| Balance sheet — indirect signals, not revenue | ||
| Net assets | — | — |
| Source | Accounts · bulk data Jun 2025 | Accounts · bulk data Jul 2026 |
How the business works
- Profit margin
- 0.4%
- Profit ÷ revenue.
- Gross margin
- 14.4%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £299k
- Revenue ÷ average employees.
- Profit per employee
- £1.3k
- 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 —
- Cash at bank
- —
- Now —
- Headcount
- —
- Now 4,841
- Deferred income
- —
- Now —
- Fixed assets
- —
- Now —
Group structure
Subsidiaries (5)
- Renewable Energy Systems LimitedFigures not disclosed
- Res DS Holdings LimitedFigures not disclosed
- Res Global Services Holdings LimitedFigures not disclosed
- Res Group Ventures LimitedFigures not disclosed
- Res UK & Ireland LimitedFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
Sources
Latest figures from accounts for the year to 31 Oct 2025 (profit £6.2m), from the Companies House accounts bulk data published Jul 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.