How much does Zeta Alarms Limited make?

Zeta Alarms Limited reported revenue of £13.1m and £1.2m profit in the year to 31 Oct 2025, according to its accounts filed at Companies House.

How many employees does Zeta Alarms Limited have?

Zeta Alarms Limited reported an average of 35 employees in the year to 31 Oct 2025.

Is Zeta Alarms Limited profitable?

Yes — Zeta Alarms Limited reported a profit of £1.2m in the year to 31 Oct 2025.

Company No. 01952631 · Incorporated 4 Oct 1985

Zeta Alarms Limited

Registered name: ZETA ALARMS LIMITED

Zeta Alarms Limited made £13.1m revenue and £1.2m profit in the year to 31 Oct 2025.

Zeta Alarms Limited’s revenue grew 6% to £13.1m in the year to 31 Oct 2025, with £1.2m profit and 35 employees. The company is classified under “manufacture of other electrical equipment” and is based in Swansea; we hold 4 years of its filed accounts.

Full P&L filedSection C · ManufacturingSIC 27900Manufacture of other electrical equipment SIC 47789Other retail sale of new goods in specialised stores (not commercial art galleries and opticians)

Status: Active
Location: Swansea, Wales
Age: 41 yrs · since 1985
Type: Private Limited Company

Latest accounts · year to 31 Oct 2025

Key figures

IndependentCapital-lightCash flow filed

Revenue

£13.1m

Growth ▲6%

Profit

£1.2m

Growth ▼8.7%

Profit margin

9.3%

Gross 32.2%

Employees

Change ▲12.9%

Profit / employee

£34.8k

Revenue/employee £374k

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 to	31 Oct 2022	31 Oct 2023	31 Oct 2024	31 Oct 2025
Disclosure	Full P&L	Full P&L	Full P&L	Full P&L
Profit & loss
Revenue (turnover)	£10.4m	£11.5m	£12.4m	£13.1m
Cost of sales	£7.4m	£7.7m	£8.4m	£8.9m
Gross profit	£3m	£3.9m	£3.9m	£4.2m
Operating profit	—	£965k	£1.4m	£1.4m
Profit before tax	£1.4m	£1m	£1.4m	£1.5m
Profit after tax	—	£1.1m	£1.3m	£1.2m
Profit (best available)	£1.4m	£1.1m	£1.3m	£1.2m
Staff costs	—	£2.5m	£2.4m	£2.8m
Employees (average)	35	34	31	35
Ratios
Profit margin	13.8%	9.6%	10.8%	9.3%
Gross margin	28.9%	33.6%	31.9%	32.2%
Revenue per employee	£298k	£339k	£399k	£374k
Profit per employee	£41.1k	£32.5k	£43.1k	£34.8k
Cash conversion	—	49%	21.1%	120.8%
Growth (year on year)
Revenue growth	—	▲10.5%	▲7.2%	▲6%
Profit growth	—	▼23.3%	▲20.8%	▼8.7%
Headcount growth	—	▼2.9%	▼8.8%	▲12.9%
Balance sheet — indirect signals, not revenue
Cash at bank	£3.3m	£3.3m	£3m	£4.2m
Net assets	—	£7.1m	£8m	£8.8m
Fixed assets	£240k	£193k	£388k	£321k
Current assets	£11m	£11.5m	£12.2m	£13m
Debtors	£3.3m	£2.9m	£3.9m	£3.8m
Deferred income	—	£4m	£4m	£3.6m
Cash from operations	−£465k	£473k	£286k	£1.7m
Source	Accounts · bulk data Mar 2024	Accounts · bulk data Mar 2024	FullAccounts · bulk data Jul 2025	FullAccounts · bulk data Jan 2026

Derived from the latest filing

How the business works

Profit margin: 9.3%; Profit ÷ revenue.
Gross margin: 32.2%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £374k; Revenue ÷ average employees.
Profit per employee: £34.8k; Profit ÷ average employees.
Cash conversion: 120.8%; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 2.5%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: 27.5%; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 28.6%; 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: ▲10%; Now £8.8m
Cash at bank: ▲41%; Now £4.2m
Headcount: ▲13%; Now 35
Deferred income: ▼11%; Now £3.6m
Fixed assets: ▼17%; Now £321k

Deferred income is reported together with accruals in this filing (“accruals and deferred income”), so it is an approximate signal only.

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Sources

Companies House profile Filing history & original accounts

Latest figures from FullAccounts for the year to 31 Oct 2025 (profit £1.2m), 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.