How much does Charles River U.K. Limited make?

Charles River U.K. Limited reported revenue of £22.2m and £18.8m profit in the year to 27 Dec 2025, according to its accounts filed at Companies House.

How many employees does Charles River U.K. Limited have?

Charles River U.K. Limited reported an average of 129 employees in the year to 27 Dec 2025.

Is Charles River U.K. Limited profitable?

Yes — Charles River U.K. Limited reported a profit of £18.8m in the year to 27 Dec 2025.

Company No. 00950184 · Incorporated 18 Mar 1969

Charles River U.K. Limited

Registered name: CHARLES RIVER U.K. LIMITED

Charles River U.K. Limited made £22.2m revenue and £18.8m profit in the year to 27 Dec 2025.

Charles River U.K. Limited’s revenue fell 5% to £22.2m in the year to 27 Dec 2025, with £18.8m profit and 129 employees. The company is classified under “research and experimental development on biotechnology” and is based in Kent; we hold 3 years of its filed accounts.

Full P&L filedSection M · Professional, scientific and technical activitiesSIC 72110Research and experimental development on biotechnology

Status: Active
Location: Kent, South East
Age: 57 yrs · since 1969
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: “Charles River Laboratories Holdings Limited”

Latest accounts · year to 27 Dec 2025

Key figures

Revenue

£22.2m

Growth ▼5.4%

Profit

£18.8m

Growth ▲22.9%

Profit margin

84.9%

Gross 37.6%

Employees

129

Change ▲3.2%

Profit / employee

£146k

Revenue/employee £172k

Profitable streak

3yrs

Consecutive profitable years in our data

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

3 filed years

Financial history

Multi-year financials, oldest to newest
Year to	30 Dec 2023	28 Dec 2024	27 Dec 2025
Disclosure	Full P&L	Full P&L	Full P&L
Profit & loss
Revenue (turnover)	£21.1m	£23.4m	£22.2m
Cost of sales	£12.8m	£14.2m	£13.8m
Gross profit	£8.3m	£9.3m	£8.3m
Operating profit	£1.8m	£991k	£1.7m
Profit before tax	£13m	£16.7m	£20.1m
Profit after tax	£12.4m	£15.3m	£18.8m
Profit (best available)	£12.4m	£15.3m	£18.8m
Staff costs	£6.2m	£6.7m	£7.7m
Employees (average)	124	125	129
Ratios
Profit margin	58.8%	65.4%	84.9%
Gross margin	39.3%	39.5%	37.6%
Revenue per employee	£170k	£187k	£172k
Profit per employee	£100k	£123k	£146k
Growth (year on year)
Revenue growth	—	▲10.9%	▼5.4%
Profit growth	—	▲23.3%	▲22.9%
Headcount growth	—	▲0.8%	▲3.2%
Balance sheet — indirect signals, not revenue
Cash at bank	£2m	£0	—
Net assets	£77.3m	£90.5m	£108m
Fixed assets	£91.9m	£102m	£102m
Current assets	£7.4m	£8m	£10.5m
Debtors	£2.5m	£2.2m	£2.1m
Deferred income	£16.2m	£16.6m	£1.7m
Source	Full Accounts · bulk data Sep 2025	Full Accounts · bulk data Sep 2025	Full Accounts · bulk data Jun 2026

Derived from the latest filing

How the business works

Profit margin: 84.9%; Profit ÷ revenue.
Gross margin: 37.6%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £172k; Revenue ÷ average employees.
Profit per employee: £146k; Profit ÷ average employees.
Cash conversion: —; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 460.7%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: 7.6%; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 9.6%; 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: ▲20%; Now £108m
Cash at bank: —; Now —
Headcount: ▲3%; Now 129
Deferred income: ▼90%; Now £1.7m
Fixed assets: ▲0%; Now £102m

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

Minority corporate shareholders

Charles River Laboratories International Inc. (registered outside the UK register)

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 Full Accounts for the year to 27 Dec 2025 (profit £18.8m), from the Companies House accounts bulk data published Jun 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.