How much does Resonics Ltd make?

Resonics Ltd reported revenue of £19.6m and £2m profit in the year to 31 Dec 2025, according to its accounts filed at Companies House.

How many employees does Resonics Ltd have?

Resonics Ltd reported an average of 27 employees in the year to 31 Dec 2025.

Is Resonics Ltd profitable?

Yes — Resonics Ltd reported a profit of £2m in the year to 31 Dec 2025.

Company No. 08798205 · Incorporated 2 Dec 2013

Resonics Ltd

Registered name: RESONICS LTD

Resonics Ltd made £19.6m revenue and £2m profit in the year to 31 Dec 2025.

Resonics Ltd’s revenue grew 19% to £19.6m in the year to 31 Dec 2025, with £2m profit and 27 employees. The company is classified under “other specialised construction activities” and is based in Deptford; we hold 4 years of its filed accounts.

Full P&L filedSection F · ConstructionSIC 43999Other specialised construction activities n.e.c.

Status: Active
Location: Deptford, London
Age: 12 yrs · since 2013
Type: Private Limited Company

Latest accounts · year to 31 Dec 2025

Key figures

IndependentCapital-lightOperating leverageBoring industryCash flow filed

Revenue

£19.6m

Growth ▲18.5%

Profit

£2m

Growth ▲18.7%

Profit margin

10%

Gross 30.8%

Employees

Change ▲8%

Profit / employee

£72.4k

Revenue/employee £727k

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)	£14.1m	£15.2m	£16.6m	£19.6m
Cost of sales	£8.6m	£9.8m	£11.7m	£13.6m
Gross profit	£5.5m	£5.4m	£4.9m	£6m
Operating profit	£3.4m	£3m	£2.1m	£2.6m
Profit before tax	£3.2m	£3.1m	£2.2m	£2.7m
Profit after tax	£2.7m	£2.4m	£1.6m	£2m
Profit (best available)	£2.7m	£2.4m	£1.6m	£2m
Staff costs	£1m	£1.3m	£1.3m	£2.1m
Employees (average)	19	23	25	27
Ratios
Profit margin	18.8%	15.5%	9.9%	10%
Gross margin	38.9%	35.4%	29.4%	30.8%
Revenue per employee	£744k	£662k	£663k	£727k
Profit per employee	£140k	£103k	£65.8k	£72.4k
Cash conversion	−24.5%	−131.4%	−46.9%	−108.3%
Growth (year on year)
Revenue growth	—	▲7.6%	▲8.8%	▲18.5%
Profit growth	—	▼11.3%	▼30.4%	▲18.7%
Headcount growth	—	▲21.1%	▲8.7%	▲8%
Balance sheet — indirect signals, not revenue
Cash at bank	£1.2m	£3.8m	£2.4m	£3.7m
Net assets	£4.8m	£7m	£6.9m	£8.5m
Fixed assets	£695k	£936k	£1.2m	£1.4m
Current assets	£6.2m	£8m	£7.2m	£8.2m
Debtors	£1.9m	£1.7m	£2.2m	£2m
Deferred income	£42.9k	£177k	£185k	£163k
Cash from operations	−£840k	−£4m	−£970k	−£2.8m
Source	FullAccounts · bulk data Sep 2024	FullAccounts · bulk data Sep 2024	FullAccounts · bulk data Sep 2025	FullAccounts · bulk data Sep 2026

Derived from the latest filing

How the business works

Profit margin: 10%; Profit ÷ revenue.
Gross margin: 30.8%; Gross profit ÷ revenue. High for software and services.
Revenue per employee: £727k; Revenue ÷ average employees.
Profit per employee: £72.4k; Profit ÷ average employees.
Cash conversion: −108.3%; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: 6.9%; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: 0.8%; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: 10.1%; 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: ▲23%; Now £8.5m
Cash at bank: ▲58%; Now £3.7m
Headcount: ▲8%; Now 27
Deferred income: ▼12%; Now £163k
Fixed assets: ▲14%; Now £1.4m

Deferred income is reported together with accruals in this filing (“accruals and deferred income”), so it is an approximate signal 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 £2m), from the Companies House accounts bulk data published Sep 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.