How much does Thermoserv Limited make?

Thermoserv Limited reported revenue of £13.4m and £215k profit in the year to 31 Dec 2025, according to its accounts filed at Companies House.

How many employees does Thermoserv Limited have?

Thermoserv Limited reported an average of 86 employees in the year to 31 Dec 2025.

Is Thermoserv Limited profitable?

Yes — Thermoserv Limited reported a profit of £215k in the year to 31 Dec 2025.

Company No. 01337045 · Incorporated 2 Nov 1977

Thermoserv Limited

Registered name: THERMOSERV LIMITED

Part of Beaumont Holdings (Sussex) Ltd group

Thermoserv Limited made £13.4m revenue and £215k profit in the year to 31 Dec 2025.

Thermoserv Limited’s revenue grew 4% to £13.4m in the year to 31 Dec 2025, with £215k profit and 86 employees. The company is classified under “plumbing, heat and air-conditioning installation” and is based in Whyteleafe; we hold 4 years of its filed accounts.

Full P&L filedSection F · ConstructionSIC 43220Plumbing, heat and air-conditioning installation

Status: Active
Location: Whyteleafe, London
Age: 48 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 Dec 2025

Key figures

Capital-lightOperating leverageBoring industryCash flow filed

Revenue

£13.4m

Growth ▲3.9%

Profit

£215k

Growth ▲128.6%

Profit margin

1.6%

Gross 33%

Employees

Change ▲28.4%

Profit / employee

£2.5k

Revenue/employee £155k

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&L	Full P&L	Full P&L	Full P&L
Profit & loss
Revenue (turnover)	£11.5m	£11.7m	£12.9m	£13.4m
Cost of sales	£8.7m	£8.8m	£9.4m	£9m
Gross profit	£2.8m	£2.9m	£3.5m	£4.4m
Operating profit	£117k	£158k	£143k	£210k
Profit before tax	£96.6k	£144k	£120k	£201k
Profit after tax	£92.4k	£115k	£94.2k	£215k
Profit (best available)	£92.4k	£115k	£94.2k	£215k
Staff costs	£3.6m	£3.4m	£4m	£5m
Employees (average)	63	59	67	86
Ratios
Profit margin	0.8%	1%	0.7%	1.6%
Gross margin	24.6%	24.6%	27.1%	33%
Revenue per employee	£182k	£198k	£192k	£155k
Profit per employee	£1.5k	£1.9k	£1.4k	£2.5k
Cash conversion	112.9%	−307.6%	−586.2%	108.7%
Growth (year on year)
Revenue growth	—	▲1.8%	▲9.9%	▲3.9%
Profit growth	—	▲24.3%	▼18%	▲128.6%
Headcount growth	—	▼6.3%	▲13.6%	▲28.4%
Balance sheet — indirect signals, not revenue
Cash at bank	£238k	£194k	£235k	£192k
Net assets	£631k	£506k	£442k	£538k
Fixed assets	£1m	£1.1m	£1.3m	£236k
Current assets	£2.6m	£3.2m	£2.8m	£4.6m
Debtors	£1.4m	£2.1m	£1.3m	£2.2m
Deferred income	£267k	£599k	£258k	£341k
Cash from operations	£133k	−£486k	−£841k	£229k
Source	FullAccounts · bulk data Jul 2024	FullAccounts · bulk data Jul 2024	FullAccounts · bulk data Dec 2025	FullAccounts · bulk data Sep 2026

Derived from the latest filing

How the business works

Profit margin: 1.6%; Profit ÷ revenue.
Gross margin: 33%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £155k; Revenue ÷ average employees.
Profit per employee: £2.5k; Profit ÷ average employees.
Cash conversion: 108.7%; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 1.8%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: 2.5%; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 16.7%; 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: ▲22%; Now £538k
Cash at bank: ▼18%; Now £192k
Headcount: ▲28%; Now 86
Deferred income: ▲32%; Now £341k
Fixed assets: ▼83%; Now £236k

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

Beaumont Holdings (Sussex) Ltdultimate parent75–100%
Thermoserv Limitedthis company

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

Sister companies (2)

Probms LtdFigures not disclosed
Temporary Climate Solutions LtdFigures not disclosed

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

Same industry, similar size

Similar profitable businesses

Industry benchmarks →

Sources

Companies House profile Filing history & original accounts

Latest figures from FullAccounts for the year to 31 Dec 2025 (profit £215k), from the Companies House accounts bulk data published Sep 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.