How much does Gemchem Limited make?

Gemchem Limited reported revenue of £1m and £152k profit in the year to 31 May 2026, according to its accounts filed at Companies House.

How many employees does Gemchem Limited have?

Gemchem Limited reported an average of 4 employees in the year to 31 May 2026.

Is Gemchem Limited profitable?

Yes — Gemchem Limited reported a profit of £152k in the year to 31 May 2026.

Company No. 04507615 · Incorporated 9 Aug 2002

Gemchem Limited

Registered name: GEMCHEM LIMITED

Part of Thermal Energy International Inc group

Gemchem Limited made £1m revenue and £152k profit in the year to 31 May 2026. read from filing text

Gemchem Limited’s revenue grew 24% to £1m in the year to 31 May 2026, with £152k profit and 4 employees. The company is classified under “technical testing and analysis” and is based in Bristol; we hold 5 years of its filed accounts.

Full P&L filedSection M · Professional, scientific and technical activitiesSIC 71200Technical testing and analysis

Status: Active
Location: Bristol, South West
Age: 24 yrs · since 2002
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 company's immediate parent is Thermal Energy International (UK) Limited, incorporated in the United Kingdom.”

Latest accounts · year to 31 May 2026

Key figures

Small teamCapital-lightDoing more with lessCash flow filed

Revenue

£1m

Growth ▲23.9%

Profit

£152k

Growth ▲14.5%

Profit margin

14.7%

Gross 63.2%

Employees

Change ▼20%

Profit / employee

£38k

Revenue/employee £259k

Profitable streak

5yrs

Consecutive profitable years in our data

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

5 filed years

Financial history

Multi-year financials, oldest to newest
Year to	31 May 2022	31 May 2023	31 May 2024	31 May 2025	31 May 2026
Disclosure	Full P&L	Full P&L	Full P&Lread from filing text	Full P&Lread from filing text	Full P&Lread from filing text
Profit & loss
Revenue (turnover)	£654k	£700k	£740k	£834k	£1m
Cost of sales	£124k	£200k	£185k	£222k	£380k
Gross profit	£530k	£500k	£555k	£612k	£654k
Operating profit	—	£16.4k	£122k	£176k	£199k
Profit before tax	£161k	£16.9k	£123k	£177k	£201k
Profit after tax	£130k	£12.5k	£91.5k	£133k	£152k
Profit (best available)	£130k	£12.5k	£91.5k	£133k	£152k
Staff costs	—	—	£306k	£308k	£323k
Employees (average)	5	6	5	5	4
Ratios
Profit margin	19.9%	1.8%	12.4%	15.9%	14.7%
Gross margin	81%	71.4%	75%	73.4%	63.2%
Revenue per employee	£131k	£117k	£148k	£167k	£259k
Profit per employee	£26.1k	£2.1k	£18.3k	£26.5k	£38k
Cash conversion	—	—	−161.1%	−105.8%	−76.4%
Growth (year on year)
Revenue growth	—	▲6.9%	▲5.8%	▲12.7%	▲23.9%
Profit growth	—	▼90.4%	▲633.3%	▲45%	▲14.5%
Headcount growth	—	▲20%	▼16.7%	0%	▼20%
Balance sheet — indirect signals, not revenue
Cash at bank	£276k	£213k	£287k	£343k	£352k
Net assets	£282k	£249k	£251k	£284k	£336k
Fixed assets	£386	£2.5k	£1.7k	£965	£522
Current assets	£411k	£370k	£407k	£463k	£491k
Debtors	£102k	£126k	£89.1k	£95.3k	£113k
Deferred income	—	—	£39k	£43.5k	£20.8k
Cash from operations	—	—	−£196k	−£186k	−£152k
Source	Accounts · bulk data Feb 2024	Accounts · bulk data Feb 2024	FullAccounts · bulk data Oct 2024	FullAccounts · bulk data Oct 2025	FullAccounts · bulk data Sep 2026

Derived from the latest filing

How the business works

Profit margin: 14.7%; Profit ÷ revenue.
Gross margin: 63.2%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £259k; Revenue ÷ average employees.
Profit per employee: £38k; Profit ÷ average employees.
Cash conversion: −76.4%; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 0.1%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: 2%; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 10.9%; 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: ▲18%; Now £336k
Cash at bank: ▲3%; Now £352k
Headcount: ▼20%; Now 4
Deferred income: ▼52%; Now £20.8k
Fixed assets: ▼46%; Now £522

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

Thermal Energy International Inc (registered outside the UK register)ultimate parent75–100%
Thermal Energy International (UK) Ltd50–75%
Gemchem 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).

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Sources

Companies House profile Filing history & original accounts

Latest figures from FullAccounts for the year to 31 May 2026 (profit £152k), 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.