How much does T.r.suterwalla & Sons Limited make?

T.r.suterwalla & Sons Limited reported revenue of £1.7m and £1.3m profit in the year to 31 Dec 2025, according to its accounts filed at Companies House.

How many employees does T.r.suterwalla & Sons Limited have?

T.r.suterwalla & Sons Limited reported an average of 5 employees in the year to 31 Dec 2025.

Is T.r.suterwalla & Sons Limited profitable?

Yes — T.r.suterwalla & Sons Limited reported a profit of £1.3m in the year to 31 Dec 2025.

Company No. 00621178 · Incorporated 17 Feb 1959

T.r.suterwalla & Sons Limited

Registered name: T.R.SUTERWALLA & SONS LIMITED

T.r.suterwalla & Sons Limited made £1.7m revenue and £1.3m profit in the year to 31 Dec 2025.

T.r.suterwalla & Sons Limited’s revenue grew 82% to £1.7m in the year to 31 Dec 2025, with £1.3m profit and 5 employees. The company is classified under “management consultancy activities other than financial management” and is based in London; we hold 4 years of its filed accounts.

Full P&L filedSection M · Professional, scientific and technical activitiesSIC 70229Management consultancy activities other than financial management

Status: Active
Location: London, London
Age: 67 yrs · since 1959
Type: Private Limited Company

Latest accounts · year to 31 Dec 2025

Key figures

IndependentSmall team

Revenue

£1.7m

Growth ▲81.6%

Profit

£1.3m

Growth ▲35.5%

Profit margin

80%

Employees

Change 0%

Profit / employee

£268k

Revenue/employee £335k

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	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)	£4.4m	£99.1k	£921k	£1.7m
Cost of sales	£3.5m	£0	—	—
Gross profit	£840k	£99.1k	—	—
Operating profit	£275k	−£1.1m	£132k	£1m
Profit before tax	−£4.8m	−£18.8k	£1.3m	£1.8m
Profit after tax	−£4.9m	£119k	£987k	£1.3m
Profit (best available)	−£4.9m	£119k	£987k	£1.3m
Staff costs	£288k	£289k	£292k	£303k
Employees (average)	5	5	5	5
Ratios
Profit margin	−111.2%	119.8%	107.2%	80%
Gross margin	19.1%	100%	—	—
Revenue per employee	£878k	£19.8k	£184k	£335k
Profit per employee	−£976k	£23.7k	£197k	£268k
Growth (year on year)
Revenue growth	—	▼97.7%	▲829.3%	▲81.6%
Profit growth	—	—	▲731.7%	▲35.5%
Headcount growth	—	0%	0%	0%
Balance sheet — indirect signals, not revenue
Cash at bank	£27.4m	£22.8m	£24.1m	£5.6m
Net assets	£36.9m	£37m	£38m	£39.3m
Fixed assets	£25m	£25m	£25m	£25m
Current assets	£27.6m	£23m	£24.2m	£15.6m
Debtors	£22.9k	£25k	£33k	£4.2k
Source	FullAccounts · bulk data Aug 2024	FullAccounts · bulk data Aug 2024	FullAccounts · bulk data Jul 2025	FullAccounts · bulk data Jul 2026

Derived from the latest filing

How the business works

Profit margin: 80%; Profit ÷ revenue.
Gross margin: —; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £335k; Revenue ÷ average employees.
Profit per employee: £268k; Profit ÷ average employees.
Cash conversion: —; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 1496%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: —; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 0.3%; 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: ▲4%; Now £39.3m
Cash at bank: ▼77%; Now £5.6m
Headcount: 0%; Now 5
Deferred income: —; Now —
Fixed assets: 0%; Now £25m

Same industry, similar size

Similar profitable businesses

Industry benchmarks →

Sources

Companies House profile Filing history & original accounts

Latest figures from FullAccounts for the year to 31 Dec 2025 (profit £1.3m), from the Companies House accounts bulk data published Jul 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.