Advanced Demand Side Management Limited
Registered name: ADVANCED DEMAND SIDE MANAGEMENT LIMITED
Advanced Demand Side Management Limited made £66.7m revenue and £116k profit in the year to 31 Mar 2025.
Advanced Demand Side Management Limited’s revenue grew 78% to £66.7m in the year to 31 Mar 2025, with £116k profit and 21 employees. The company is classified under “water collection, treatment and supply” and is based in Windsor; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- Windsor, South East
- Age
- 34 yrs · since 1992
- Type
- Private Limited Company
Key figures
Badges are automated estimates derived from the filed figures — not statements of fact about the company.
Financial history
| Year to | 31 Mar 2022 | 31 Mar 2023 | 31 Mar 2024 | 31 Mar 2025 |
|---|---|---|---|---|
| Disclosure | Full P&L | Full P&L | Full P&L | Full P&L |
| Profit & loss | ||||
| Revenue (turnover) | £14.8m | £25.5m | £37.6m | £66.7m |
| Cost of sales | £13.7m | £23.4m | £35.7m | £63.5m |
| Gross profit | £1.1m | £2.1m | £1.9m | £3.2m |
| Operating profit | −£149k | £165k | £639k | £192k |
| Profit before tax | −£27k | £142k | £1m | £190k |
| Profit after tax | −£3.7k | £127k | £714k | £116k |
| Profit (best available) | −£3.7k | £127k | £714k | £116k |
| Staff costs | £868k | £951k | £975k | £1.4m |
| Employees (average) | 18 | 19 | 19 | 21 |
| Ratios | ||||
| Profit margin | 0% | 0.5% | 1.9% | 0.2% |
| Gross margin | 7.6% | 8.3% | 5% | 4.8% |
| Revenue per employee | £824k | £1.3m | £2m | £3.2m |
| Profit per employee | −£204 | £6.7k | £37.6k | £5.5k |
| Cash conversion | — | 538.5% | −211.7% | −1934% |
| Growth (year on year) | ||||
| Revenue growth | — | ▲71.7% | ▲47.5% | ▲77.5% |
| Profit growth | — | — | ▲460.8% | ▼83.7% |
| Headcount growth | — | ▲5.6% | 0% | ▲10.5% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | £842k | £640k | £2.6m | £6.3m |
| Net assets | £1.1m | £1.1m | £1.9m | £2m |
| Fixed assets | £2.4m | £1.1m | £1.4m | £480k |
| Current assets | £4.6m | £7.2m | £14.9m | £21m |
| Debtors | £2.2m | £2.3m | £4.4m | £10m |
| Deferred income | £4.2m | £4.4m | £7m | — |
| Cash from operations | −£1.2m | £886k | −£1.4m | −£3.7m |
| Source | FullAccounts · bulk data Mar 2024 | FullAccounts · bulk data Mar 2024 | FullAccounts · bulk data Dec 2024 | FullAccounts · bulk data Dec 2025 |
How the business works
- Profit margin
- 0.2%
- Profit ÷ revenue.
- Gross margin
- 4.8%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £3.2m
- Revenue ÷ average employees.
- Profit per employee
- £5.5k
- Profit ÷ average employees.
- Cash conversion
- −1934%
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- 0.7%
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- —
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- 15%
- 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
- ▲6%
- Now £2m
- Cash at bank
- ▲136%
- Now £6.3m
- Headcount
- ▲11%
- Now 21
- Deferred income
- —
- Now —
- Fixed assets
- ▼65%
- Now £480k
Group structure
Subsidiaries (1)
- Darq Studios LimitedActive - Proposal to Strike offFigures not disclosed
Minority corporate shareholders
- Water Forensics Limited 25–50%
From the Persons with Significant Control register (corporate controllers only).
Similar profitable businesses
- Pozitive Water LimitedLondon · Water collection, treatment and supply
- Revenue
- £47.3m
- Profit
- £657k
- Staff
- 14
- Auger Site Investigations LimitedLiverpool · Water collection, treatment and supply
- Revenue
- £24.3m
- Profit
- £4.8m
- Staff
- 226
- Drain Line Southern LimitedBrighton · Water collection, treatment and supply
- Revenue
- £22.9m
- Profit
- £1.2m
- Staff
- 255
Sources
Latest figures from FullAccounts for the year to 31 Mar 2025 (profit £116k), from the Companies House accounts bulk data published Dec 2025. Spotted an error? Request a correction.
Updated from Companies House on 13 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.