How much does Transformers & Rectifiers Limited make?

Transformers & Rectifiers Limited reported revenue of £17.8m and £2.1m profit in the year to 31 Dec 2025, according to its accounts filed at Companies House.

How many employees does Transformers & Rectifiers Limited have?

Transformers & Rectifiers Limited reported an average of 102 employees in the year to 31 Dec 2025.

Is Transformers & Rectifiers Limited profitable?

Yes — Transformers & Rectifiers Limited reported a profit of £2.1m in the year to 31 Dec 2025.

Company No. 00498430 · Incorporated 11 Aug 1951

Transformers & Rectifiers Limited

Registered name: TRANSFORMERS & RECTIFIERS LIMITED

Part of Cranwell Investments UK Limited group

Transformers & Rectifiers Limited made £17.8m revenue and £2.1m profit in the year to 31 Dec 2025.

Transformers & Rectifiers Limited’s revenue fell 5% to £17.8m in the year to 31 Dec 2025, with £2.1m profit and 102 employees. The company is classified under “manufacture of electric motors, generators and transformers” and is based in Surrey; we hold 4 years of its filed accounts.

Full P&L filedSection C · ManufacturingSIC 27110Manufacture of electric motors, generators and transformers

Status: Active
Location: Surrey, South East
Age: 75 yrs · since 1951
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 31 Dec 2025

Key figures

Capital-light

Revenue

£17.8m

Growth ▼5.3%

Profit

£2.1m

Growth ▼18.3%

Profit margin

11.8%

Gross 40.4%

Employees

102

Change ▼4.7%

Profit / employee

£20.6k

Revenue/employee £175k

Profitable streak

4yrs

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 Dec 2022	31 Dec 2023	31 Dec 2024	31 Dec 2025
Disclosure	Full P&L	Full P&L	Full P&L	Full P&L
Profit & loss
Revenue (turnover)	£13.5m	£18.3m	£18.8m	£17.8m
Cost of sales	£8.8m	£11.3m	£12.2m	£10.6m
Gross profit	£4.7m	£7m	£6.6m	£7.2m
Operating profit	£2.1m	£3.7m	£3.5m	£2.8m
Profit before tax	£2.1m	£3.8m	£3.5m	£2.8m
Profit after tax	£1.7m	£2.9m	£2.6m	£2.1m
Profit (best available)	£1.7m	£2.9m	£2.6m	£2.1m
Staff costs	£3.7m	£4.3m	£4.6m	£5.4m
Employees (average)	101	97	107	102
Ratios
Profit margin	12.8%	15.7%	13.7%	11.8%
Gross margin	34.8%	38.4%	35.3%	40.4%
Revenue per employee	£134k	£189k	£176k	£175k
Profit per employee	£17.1k	£29.7k	£24.1k	£20.6k
Growth (year on year)
Revenue growth	—	▲35.5%	▲2.9%	▼5.3%
Profit growth	—	▲66.3%	▼10.5%	▼18.3%
Headcount growth	—	▼4%	▲10.3%	▼4.7%
Balance sheet — indirect signals, not revenue
Cash at bank	£2.4m	£3.6m	£3.4m	£4.9m
Net assets	£8.9m	£11.8m	£13.4m	£13.5m
Fixed assets	£1.4m	£1.6m	£1.7m	£1.7m
Current assets	£12.8m	£14.5m	£16.2m	£17.4m
Debtors	£5.1m	£5.8m	£7m	£6.7m
Deferred income	£287k	£875k	£1.9m	£2.4m
Source	FullAccounts · bulk data Jun 2024	FullAccounts · bulk data Jun 2024	FullAccounts · bulk data Jul 2025	FullAccounts · bulk data Jun 2026

Derived from the latest filing

How the business works

Profit margin: 11.8%; Profit ÷ revenue.
Gross margin: 40.4%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £175k; Revenue ÷ average employees.
Profit per employee: £20.6k; Profit ÷ average employees.
Cash conversion: —; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 9.7%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: 13.3%; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 37.7%; 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 £13.5m
Cash at bank: ▲45%; Now £4.9m
Headcount: ▼5%; Now 102
Deferred income: ▲23%; Now £2.4m
Fixed assets: ▲4%; Now £1.7m

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

Cranwell Investments UK Limitedultimate parent75–100%
Transformers & Rectifiers (Holdings) Limited75–100%
Transformers & Rectifiers Limitedthis company

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

Sister companies (3)

Brentford Electric LimitedFigures not disclosed
Brentford Regulators LimitedFigures not disclosed
Southern Transformer Products 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 31 Dec 2025 (profit £2.1m), 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.