Advanced Signal Monitoring Ltd
Registered name: ADVANCED SIGNAL MONITORING LTD
Part of I.c.t.s. (U.K.) Limited groupAdvanced Signal Monitoring Ltd made £2.8m revenue and a £167k loss in the year to 31 Dec 2025.
Advanced Signal Monitoring Ltd’s revenue grew 18% to £2.8m in the year to 31 Dec 2025, with a loss of £167k and 20 employees. The company is classified under “other service activities” and is based in London; we hold 3 years of its filed accounts.
- Status
- Active
- Location
- London
- Age
- 19 yrs · since 2007
- Type
- Private Limited Company
Key figures
Financial history
| Year to | 31 Dec 2023 | 31 Dec 2024 | 31 Dec 2025 |
|---|---|---|---|
| Disclosure | Full P&L | Full P&L | Full P&L |
| Profit & loss | |||
| Revenue (turnover) | £2.1m | £2.4m | £2.8m |
| Cost of sales | −£1.7m | −£2m | −£2.4m |
| Gross profit | £397k | £354k | £416k |
| Operating profit | −£186k | −£281k | −£245k |
| Profit before tax | −£192k | −£289k | −£265k |
| Profit after tax | −£143k | −£279k | −£167k |
| Profit (best available) | −£143k | −£279k | −£167k |
| Employees (average) | 22 | 15 | 20 |
| Ratios | |||
| Profit margin | −6.9% | −11.8% | −6% |
| Gross margin | 19.1% | 15% | 14.9% |
| Revenue per employee | £94.4k | £157k | £139k |
| Profit per employee | −£6.5k | −£18.6k | −£8.3k |
| Growth (year on year) | |||
| Revenue growth | — | ▲13.6% | ▲18.1% |
| Headcount growth | — | ▼31.8% | ▲33.3% |
| Balance sheet — indirect signals, not revenue | |||
| Net assets | — | — | — |
| Source | Accounts · bulk data Mar 2025 | Accounts · bulk data Mar 2025 | Accounts · bulk data Apr 2026 |
How the business works
- Profit margin
- −6%
- Profit ÷ revenue.
- Gross margin
- 14.9%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £139k
- Revenue ÷ average employees.
- Profit per employee
- −£8.3k
- 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
- ▲33%
- Now 20
- Deferred income
- —
- Now —
- Fixed assets
- —
- Now —
Group structure
Ownership chain
- I.c.t.s. (U.K.) Limitedultimate parent75–100%
- Advanced Signal Monitoring Ltdthis company
Bands show the share of ownership each company holds in the one below it.
Sister companies (1)
- Diagnose UK LimitedFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
Sources
Latest figures from accounts for the year to 31 Dec 2025 (profit −£167k), from the Companies House accounts bulk data published Apr 2026. Spotted an error? Request a correction.
Updated from Companies House on 23 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.