How much does Rock Chemicals Limited make?

Rock Chemicals Limited reported revenue of £31.4m and a loss of £454k in the year to 31 Mar 2025, according to its accounts filed at Companies House.

How many employees does Rock Chemicals Limited have?

Rock Chemicals Limited reported an average of 62 employees in the year to 31 Mar 2025.

Is Rock Chemicals Limited profitable?

No — Rock Chemicals Limited reported a loss of £454k in the year to 31 Mar 2025.

Company No. 00835494 · Incorporated 26 Jan 1965

Rock Chemicals Limited

Registered name: ROCK CHEMICALS LIMITED

Rock Chemicals Limited made £31.4m revenue and a £454k loss in the year to 31 Mar 2025.

Rock Chemicals Limited’s revenue grew 21% to £31.4m in the year to 31 Mar 2025, with a loss of £454k and 62 employees. The company is classified under “other treatment of petroleum products (excluding petrochemicals manufacture)” and is based in Cheshire; we hold 4 years of its filed accounts.

Full P&L filedSection C · ManufacturingSIC 19209Other treatment of petroleum products (excluding petrochemicals manufacture)SIC 20140Manufacture of other organic basic chemicals

Status: Active
Location: Cheshire, North West
Age: 61 yrs · since 1965
Type: Private Limited Company

Latest accounts · year to 31 Mar 2025

Key figures

IndependentCash flow filed

Revenue

£31.4m

Growth ▲21.4%

Profit

−£454k

Growth —

Profit margin

−1.5%

Gross 11.9%

Employees

Change ▲1.6%

Profit / employee

−£7.3k

Revenue/employee £507k

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.

4 filed years

Financial history

Multi-year financials, oldest to newest
Year to	31 Mar 2022	31 Mar 2023	31 Mar 2024	31 Mar 2025
Disclosure	Full P&L	Full P&L	Full P&L	Full P&L
Profit & loss
Revenue (turnover)	£22.9m	£24.2m	£25.9m	£31.4m
Cost of sales	£19.3m	£20.6m	£23m	£27.7m
Gross profit	£3.6m	£3.7m	£2.9m	£3.8m
Operating profit	£399k	£180k	−£636k	−£249k
Profit before tax	£293k	£42.6k	−£942k	−£509k
Profit after tax	£200k	£77.2k	−£716k	−£454k
Profit (best available)	£200k	£77.2k	−£716k	−£454k
Staff costs	£2.6m	£2.6m	£2.6m	£2.7m
Employees (average)	70	66	61	62
Ratios
Profit margin	0.9%	0.3%	−2.8%	−1.5%
Gross margin	15.8%	15.1%	11.3%	11.9%
Revenue per employee	£327k	£367k	£424k	£507k
Profit per employee	£2.9k	£1.2k	−£11.7k	−£7.3k
Cash conversion	−56.1%	−226.8%	—	—
Growth (year on year)
Revenue growth	—	▲5.9%	▲6.7%	▲21.4%
Profit growth	—	▼61.3%	▼1026%	—
Headcount growth	—	▼5.7%	▼7.6%	▲1.6%
Balance sheet — indirect signals, not revenue
Cash at bank	£248k	£348k	£525k	£512k
Net assets	£4.7m	£4.8m	£4.1m	£3.8m
Fixed assets	£3.7m	£3.6m	£3.7m	£3.8m
Current assets	£8.7m	£8.3m	£7.9m	£8.6m
Debtors	£3.3m	£2.5m	£2.7m	£3.5m
Cash from operations	−£224k	−£409k	−£787k	−£359k
Source	Accounts · bulk data Dec 2023	Accounts · bulk data Dec 2023	FullAccounts · bulk data Dec 2024	FullAccounts · bulk data Dec 2025

Derived from the latest filing

How the business works

Profit margin: −1.5%; Profit ÷ revenue.
Gross margin: 11.9%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £507k; Revenue ÷ average employees.
Profit per employee: −£7.3k; Profit ÷ average employees.
Cash conversion: —; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 12.1%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: —; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 11%; 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: ▼6%; Now £3.8m
Cash at bank: ▼3%; Now £512k
Headcount: ▲2%; Now 62
Deferred income: —; Now —
Fixed assets: ▲3%; Now £3.8m

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Sources

Companies House profile Filing history & original accounts

Latest figures from FullAccounts for the year to 31 Mar 2025 (profit −£454k), from the Companies House accounts bulk data published Dec 2025. Spotted an error? Request a correction.

Updated from Companies House on 24 Oct 2026

Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.