How much does Alpha Therm Limited make?

Alpha Therm Limited reported revenue of £25.3m and £842k profit in the year to 31 Dec 2025, according to its accounts filed at Companies House.

How many employees does Alpha Therm Limited have?

Alpha Therm Limited reported an average of 79 employees in the year to 31 Dec 2025.

Is Alpha Therm Limited profitable?

Yes — Alpha Therm Limited reported a profit of £842k in the year to 31 Dec 2025.

Company No. 00882439 · Incorporated 29 Jun 1966

Alpha Therm Limited

Registered name: ALPHA THERM LIMITED

Alpha Therm Limited made £25.3m revenue and £842k profit in the year to 31 Dec 2025. read from filing text

Alpha Therm Limited’s revenue fell 15% to £25.3m in the year to 31 Dec 2025, with £842k profit and 79 employees. The company is classified under “manufacture of central heating radiators and boilers” and is based in Sevenoaks; we hold 4 years of its filed accounts.

Full P&L filedSection C · ManufacturingSIC 25210Manufacture of central heating radiators and boilers

Status: Active
Location: Sevenoaks, South East
Age: 60 yrs · since 1966
Type: Private Limited Company

Part of a group. The filing indicates this company sits within a group structure, so its results may depend on intra-group trading and it may be hard to replicate independently. From the filing: “The ultimate and immediate parent company of Alpha Therm Limited is Immerfin SpA, a company incorporated in Italy. This is the largest and smallest group in whose financial statements the company is c”

Latest accounts · year to 31 Dec 2025

Key figures

Capital-lightCash flow filed

Revenue

£25.3m

Growth ▼15.1%

Profit

£842k

Growth ▼31.3%

Profit margin

3.3%

Gross 32.5%

Employees

Change ▼1.3%

Profit / employee

£10.7k

Revenue/employee £320k

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 Dec 2022	31 Dec 2023	31 Dec 2024	31 Dec 2025
Disclosure	Full P&Lread from filing text	Full P&Lread from filing text	Full P&Lread from filing text	Full P&Lread from filing text
Profit & loss
Revenue (turnover)	£30.4m	£25.1m	£29.7m	£25.3m
Cost of sales	£22.7m	£17.4m	£20.5m	£17.1m
Gross profit	£7.7m	£7.6m	£9.2m	£8.2m
Operating profit	£894k	£857k	£1.8m	£876k
Profit before tax	£1m	£931k	£1.7m	£1.2m
Profit after tax	£800k	£670k	£1.2m	£842k
Profit (best available)	£800k	£670k	£1.2m	£842k
Staff costs	£3.8m	£3.7m	£3.9m	£3.9m
Employees (average)	78	79	80	79
Ratios
Profit margin	2.6%	2.7%	4.1%	3.3%
Gross margin	25.4%	30.5%	31%	32.5%
Revenue per employee	£390k	£317k	£372k	£320k
Profit per employee	£10.3k	£8.5k	£15.3k	£10.7k
Cash conversion	−156.9%	−51.2%	−117.8%	−54.4%
Growth (year on year)
Revenue growth	—	▼17.6%	▲18.7%	▼15.1%
Profit growth	—	▼16.3%	▲82.9%	▼31.3%
Headcount growth	—	▲1.3%	▲1.3%	▼1.3%
Balance sheet — indirect signals, not revenue
Cash at bank	£3.2m	£3.7m	£5.1m	£3.9m
Net assets	£805k	£1.5m	£1.9m	£1.7m
Fixed assets	£182k	£158k	£210k	£436k
Current assets	£11.8m	£12.6m	£13.3m	£11.2m
Debtors	£5.6m	£5.4m	£5.1m	£4.2m
Deferred income	£1m	£1.1m	£1.2m	£1.6m
Cash from operations	−£1.4m	−£439k	−£2.1m	−£477k
Source	FullAccounts · bulk data Apr 2024	FullAccounts · bulk data Apr 2024	FullAccounts · bulk data Apr 2025	FullAccounts · bulk data Mar 2026

Derived from the latest filing

How the business works

Profit margin: 3.3%; Profit ÷ revenue.
Gross margin: 32.5%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £320k; Revenue ÷ average employees.
Profit per employee: £10.7k; Profit ÷ average employees.
Cash conversion: −54.4%; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 1.7%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: 6.3%; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 16.5%; 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: ▼8%; Now £1.7m
Cash at bank: ▼23%; Now £3.9m
Headcount: ▼1%; Now 79
Deferred income: ▲33%; Now £1.6m
Fixed assets: ▲108%; Now £436k

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 Dec 2025 (profit £842k), from the Companies House accounts bulk data published Mar 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.