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Company No. 08745611 · Incorporated 23 Oct 2013

Alertsystems Group Limited

Registered name: ALERTSYSTEMS GROUP LIMITED

Alertsystems Group Limited made £12.1m revenue and £712k profit in the year to 30 Apr 2025.

Alertsystems Group Limited’s revenue fell 11% to £12.1m in the year to 30 Apr 2025, with £712k profit and 151 employees. The company is classified under “security systems service activities” and is based in Trowbridge; we hold 4 years of its filed accounts.

Full P&L filedSection N · Administrative and support servicesSIC 80200Security systems service activities
Status
Active
Location
Trowbridge, South West
Age
12 yrs · since 2013
Type
Private Limited Company
Latest accounts · year to 30 Apr 2025

Key figures

IndependentCapital-lightCash flow filed
Revenue
£12.1m
Growth ▼10.6%
Profit
£712k
Growth ▼14.9%
Profit margin
5.9%
Gross 31.1%
Employees
151
Change ▲2%
Profit / employee
£4.7k
Revenue/employee £80.3k
Profitable streak
4yrs
Consecutive profitable years in our data

Badges are automated estimates derived from the filed figures — not statements of fact about the company.

4 filed years

Financial history

Multi-year financials, oldest to newest
Year to30 Apr 202230 Apr 202330 Apr 202430 Apr 2025
DisclosureFull P&LFull P&LFull P&LFull P&L
Profit & loss
Revenue (turnover)£11.5m£13.3m£13.6m£12.1m
Cost of sales£7.2m£8.6m£8.9m£8.4m
Gross profit£4.3m£4.7m£4.6m£3.8m
Operating profit£973k£964k£457k−£302k
Profit before tax£961k£954k£447k−£319k
Profit after tax£1m£811k£837k£712k
Profit (best available)£1m£811k£837k£712k
Staff costs£5m£5.5m£6.2m£6.4m
Employees (average)141148148151
Ratios
Profit margin8.9%6.1%6.2%5.9%
Gross margin37.5%35.3%34.2%31.1%
Revenue per employee£81.5k£89.9k£91.7k£80.3k
Profit per employee£7.3k£5.5k£5.7k£4.7k
Cash conversion128.1%112.7%69.7%—
Growth (year on year)
Revenue growth—▲15.8%▲2%▼10.6%
Profit growth—▼21.1%▲3.2%▼14.9%
Headcount growth—▲5%0%▲2%
Balance sheet — indirect signals, not revenue
Cash at bank£2.6m£2.5m£46£673k
Net assets£2.8m£2.8m£2.8m£2.8m
Fixed assets£480k£421k£403k£276k
Current assets£6.2m£5.8m£5.5m£3.9m
Debtors£2.5m£2.4m£3.1m£2.5m
Cash from operations£1.2m£1.1m£319k£55k
SourceAccounts · bulk data Jan 2024Accounts · bulk data Jan 2024FullAccounts · bulk data Jan 2025FullAccounts · bulk data Jan 2026
Derived from the latest filing

How the business works

Profit margin
5.9%
Profit ÷ revenue.
Gross margin
31.1%
Gross profit ÷ revenue. High for software and services.
Revenue per employee
£80.3k
Revenue ÷ average employees.
Profit per employee
£4.7k
Profit ÷ average employees.
Cash conversion
—
Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue
2.3%
Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue
—
Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue
20.5%
Money owed by customers. Low = customers pay quickly.
Indirect — not revenue

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
▲0%
Now £2.8m
Cash at bank
▲1461861%
Now £673k
Headcount
▲2%
Now 151
Deferred income
—
Now —
Fixed assets
▼32%
Now £276k
Corporate ownership

Group structure

Subsidiaries (3)

From the Persons with Significant Control register (corporate controllers only).

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Sources

Companies House profile Filing history & original accounts

Latest figures from FullAccounts for the year to 30 Apr 2025 (profit £712k), from the Companies House accounts bulk data published Jan 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.