How much does Intumescent Systems Limited make?

Intumescent Systems Limited reported revenue of £10.7m and a loss of £276k in the year to 5 Apr 2025, according to its accounts filed at Companies House.

How many employees does Intumescent Systems Limited have?

Intumescent Systems Limited reported an average of 159 employees in the year to 5 Apr 2025.

Is Intumescent Systems Limited profitable?

No — Intumescent Systems Limited reported a loss of £276k in the year to 5 Apr 2025.

Company No. 02139649 · Incorporated 10 Jun 1987

Intumescent Systems Limited

Registered name: INTUMESCENT SYSTEMS LIMITED

Part of Envirograf Limited group

Intumescent Systems Limited made £10.7m revenue and a £276k loss in the year to 5 Apr 2025.

Intumescent Systems Limited’s revenue fell 2% to £10.7m in the year to 5 Apr 2025, with a loss of £276k and 159 employees. The company is classified under “manufacture of paints, varnishes and similar coatings, mastics and sealants” and is based in Dover; we hold 2 years of its filed accounts.

Full P&L filedSection C · ManufacturingSIC 20301Manufacture of paints, varnishes and similar coatings, mastics and sealants

Status: Active
Location: Dover, South East
Age: 39 yrs · since 1987
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 5 Apr 2025

Key figures

Capital-lightCash flow filed

Revenue

£10.7m

Growth ▼1.8%

Profit

−£276k

Growth ▼302.1%

Profit margin

−2.6%

Gross 31.7%

Employees

159

Change ▼4.2%

Profit / employee

−£1.7k

Revenue/employee £67.5k

Profitable streak

0yrs

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	5 Apr 2025
Disclosure	Full P&L	Full P&L
Profit & loss
Revenue (turnover)	£10.9m	£10.7m
Cost of sales	£7.6m	£7.3m
Gross profit	£3.3m	£3.4m
Operating profit	−£194k	−£439k
Profit before tax	−£192k	−£437k
Profit after tax	£137k	−£276k
Profit (best available)	£137k	−£276k
Staff costs	£6m	£5.8m
Employees (average)	166	159
Ratios
Profit margin	1.3%	−2.6%
Gross margin	30.5%	31.7%
Revenue per employee	£65.9k	£67.5k
Profit per employee	£824	−£1.7k
Growth (year on year)
Revenue growth	—	▼1.8%
Profit growth	—	▼302.1%
Headcount growth	—	▼4.2%
Balance sheet — indirect signals, not revenue
Cash at bank	£203k	£133k
Net assets	£3.9m	£3.6m
Fixed assets	£1m	£826k
Current assets	£4.4m	£4.8m
Debtors	£957k	£1.1m
Deferred income	£196k	£786k
Cash from operations	−£17.6k	£186k
Source	FullAccounts · bulk data Jan 2026	FullAccounts · bulk data Jan 2026

Derived from the latest filing

How the business works

Profit margin: −2.6%; Profit ÷ revenue.
Gross margin: 31.7%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £67.5k; Revenue ÷ average employees.
Profit per employee: −£1.7k; Profit ÷ average employees.
Cash conversion: —; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 7.7%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: 7.3%; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 10%; 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: ▼7%; Now £3.6m
Cash at bank: ▼34%; Now £133k
Headcount: ▼4%; Now 159
Deferred income: ▲301%; Now £786k
Fixed assets: ▼21%; Now £826k

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

Envirograf Limitedultimate parent75–100%
Intumescent Systems Limitedthis company

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

Sister companies (6)

Electra-Low LtdRev. £3.9k · Profit −£2.3k
Enviro Eco Wall Panels LtdFigures not disclosed
Envirograf Worldwide LimitedFigures not disclosed
Envirowall Building Services LtdFigures not disclosed
Fire Prevention Products LimitedFigures not disclosed
Worldwide Passive Fire LimitedFigures not disclosed

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 5 Apr 2025 (profit −£276k), 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.