How much does Sterling Thermal Technology Limited make?

Sterling Thermal Technology Limited reported revenue of £16.2m and £871k profit in the year to 31 Mar 2025, according to its accounts filed at Companies House.

How many employees does Sterling Thermal Technology Limited have?

Sterling Thermal Technology Limited reported an average of 116 employees in the year to 31 Mar 2025.

Is Sterling Thermal Technology Limited profitable?

Yes — Sterling Thermal Technology Limited reported a profit of £871k in the year to 31 Mar 2025.

Company No. 01335179 · Incorporated 21 Oct 1977

Sterling Thermal Technology Limited

Registered name: STERLING THERMAL TECHNOLOGY LIMITED

Part of Pemberstone Capital Partners Limited group

Sterling Thermal Technology Limited made £16.2m revenue and £871k profit in the year to 31 Mar 2025. read from filing text

Sterling Thermal Technology Limited’s revenue fell 19% to £16.2m in the year to 31 Mar 2025, with £871k profit and 116 employees. The company is classified under “manufacture of non-domestic cooling and ventilation equipment” and is based in Worcester; we hold 2 years of its filed accounts.

Full P&L filedSection C · ManufacturingSIC 28250Manufacture of non-domestic cooling and ventilation equipment

Status: Active
Location: Worcester, West Midlands
Age: 49 yrs · since 1977
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.

Latest accounts · year to 31 Mar 2025

Key figures

Revenue

£16.2m

Growth ▼18.6%

Profit

£871k

Growth ▼62.8%

Profit margin

5.4%

Gross 34.4%

Employees

116

Change ▲7.4%

Profit / employee

£7.5k

Revenue/employee £140k

Profitable streak

2yrs

Consecutive profitable years in our data

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

2 filed years

Financial history

Multi-year financials, oldest to newest
Year to	31 Mar 2024	31 Mar 2025
Disclosure	Full P&Lread from filing text	Full P&Lread from filing text
Profit & loss
Revenue (turnover)	£19.9m	£16.2m
Cost of sales	£12.6m	£10.6m
Gross profit	£7.3m	£5.6m
Operating profit	£1.9m	£1.2m
Profit before tax	£1.8m	£1.1m
Profit after tax	£2.3m	£871k
Profit (best available)	£2.3m	£871k
Staff costs	£6.2m	£5.9m
Employees (average)	108	116
Ratios
Profit margin	11.8%	5.4%
Gross margin	36.7%	34.4%
Revenue per employee	£184k	£140k
Profit per employee	£21.7k	£7.5k
Growth (year on year)
Revenue growth	—	▼18.6%
Profit growth	—	▼62.8%
Headcount growth	—	▲7.4%
Balance sheet — indirect signals, not revenue
Cash at bank	£1.5m	£1.5m
Net assets	£5.2m	£6m
Fixed assets	£2.4m	£2.6m
Current assets	£8.9m	£9.4m
Debtors	£3.2m	£3.3m
Deferred income	£922k	£70.9k
Source	FullAccounts · bulk data Dec 2025	FullAccounts · bulk data Dec 2025

Derived from the latest filing

How the business works

Profit margin: 5.4%; Profit ÷ revenue.
Gross margin: 34.4%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £140k; Revenue ÷ average employees.
Profit per employee: £7.5k; Profit ÷ average employees.
Cash conversion: —; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 16%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: 0.4%; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 20.3%; 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: ▲17%; Now £6m
Cash at bank: ▲1%; Now £1.5m
Headcount: ▲7%; Now 116
Deferred income: ▼92%; Now £70.9k
Fixed assets: ▲10%; Now £2.6m

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

Corporate ownership

Group structure

Ownership chain

Pemberstone Capital Partners Limitedultimate parent75–100%
Sterling Thermal Technology Group Limited75–100%
Sterling Thermal Technology Midco Limited75–100%
Sterling Thermal Technology Limitedthis company

Bands show the share of ownership each company holds in the one below it.

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

Same industry, similar size

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Sources

Companies House profile Filing history & original accounts

Latest figures from FullAccounts for the year to 31 Mar 2025 (profit £871k), from the Companies House accounts bulk data published Dec 2025. 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.