How much does Rayleigh Instruments Limited make?

Rayleigh Instruments Limited reported revenue of £13.2m and £795k profit in the year to 30 Jun 2025, according to its accounts filed at Companies House.

How many employees does Rayleigh Instruments Limited have?

Rayleigh Instruments Limited reported an average of 41 employees in the year to 30 Jun 2025.

Is Rayleigh Instruments Limited profitable?

Yes — Rayleigh Instruments Limited reported a profit of £795k in the year to 30 Jun 2025.

Company No. 00808961 · Incorporated 15 Jun 1964

Rayleigh Instruments Limited

Registered name: RAYLEIGH INSTRUMENTS LIMITED

Rayleigh Instruments Limited made £13.2m revenue and £795k profit in the year to 30 Jun 2025. read from filing text

Rayleigh Instruments Limited’s revenue grew 6% to £13.2m in the year to 30 Jun 2025, with £795k profit and 41 employees. The company is classified under “manufacture of electronic industrial process control equipment” and is based in South Woodham Ferrers; we hold 4 years of its filed accounts.

Full P&L filedSection C · ManufacturingSIC 26512Manufacture of electronic industrial process control equipment SIC 27120Manufacture of electricity distribution and control apparatus SIC 27900Manufacture of other electrical equipment SIC 46520Wholesale of electronic and telecommunications equipment and parts

Status: Active
Location: South Woodham Ferrers, East of England
Age: 62 yrs · since 1964
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 parent company of Rayleigh Instruments Limited is Raytel Group Limited and its registered office is Raytel House, 1-5 Cutlers Road, South Woodham Ferrers, Essex, CM3 5WA.”

Latest accounts · year to 30 Jun 2025

Key figures

Capital-light

Revenue

£13.2m

Growth ▲5.8%

Profit

£795k

Growth ▼24.9%

Profit margin

Gross 33.5%

Employees

Change ▲2.5%

Profit / employee

£19.4k

Revenue/employee £323k

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.

4 filed years

Financial history

Multi-year financials, oldest to newest
Year to	30 Jun 2022	30 Jun 2023	30 Jun 2024	30 Jun 2025
Disclosure	No P&L	Full P&Lread from filing text	Full P&Lread from filing text	Full P&Lread from filing text
Profit & loss
Revenue (turnover)	—	£18.8m	£12.5m	£13.2m
Cost of sales	—	£13m	£7.9m	£8.8m
Gross profit	—	£5.9m	£4.6m	£4.4m
Operating profit	—	£2.2m	£1.1m	£889k
Profit before tax	—	£2.2m	£1.1m	£841k
Profit after tax	—	£1.9m	£1.1m	£795k
Profit (best available)	—	£1.9m	£1.1m	£795k
Staff costs	—	£1.9m	£2m	£1.9m
Employees (average)	30	35	40	41
Ratios
Profit margin	—	10%	8.5%	6%
Gross margin	—	31.2%	37%	33.5%
Revenue per employee	—	£538k	£313k	£323k
Profit per employee	—	£53.6k	£26.5k	£19.4k
Growth (year on year)
Revenue growth	—	—	▼33.5%	▲5.8%
Profit growth	—	—	▼43.5%	▼24.9%
Headcount growth	—	▲16.7%	▲14.3%	▲2.5%
Balance sheet — indirect signals, not revenue
Cash at bank	£233k	£1m	£530k	£969k
Net assets	£3.1m	£4.4m	£5m	£5m
Fixed assets	£554k	£530k	£499k	£704k
Current assets	£4.1m	£5.3m	£5.6m	£5.8m
Debtors	£2.4m	£1.8m	£2.4m	£2.3m
Deferred income	—	£39.1k	£41.3k	£37.2k
Source	FullAccounts · bulk data Mar 2024	FullAccounts · bulk data Mar 2024	FullAccounts · bulk data Mar 2025	FullAccounts · bulk data Mar 2026

Derived from the latest filing

How the business works

Profit margin: 6%; Profit ÷ revenue.
Gross margin: 33.5%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £323k; Revenue ÷ average employees.
Profit per employee: £19.4k; Profit ÷ average employees.
Cash conversion: —; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 5.3%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: 0.3%; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 17.3%; 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: ▲1%; Now £5m
Cash at bank: ▲83%; Now £969k
Headcount: ▲3%; Now 41
Deferred income: ▼10%; Now £37.2k
Fixed assets: ▲41%; Now £704k

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

Subsidiaries (1)

Ri Controls UK LtdFigures 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 30 Jun 2025 (profit £795k), from the Companies House accounts bulk data published Mar 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.