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Company No. 00068497 · Incorporated 20 Dec 1900

Incorporated Society of British Advertisers Limited

Registered name: INCORPORATED SOCIETY OF BRITISH ADVERTISERS LIMITED

Incorporated Society of British Advertisers Limited made £24.9m revenue and £170k profit in the year to 31 Mar 2025. read from filing text

Incorporated Society of British Advertisers Limited’s revenue grew 13% to £24.9m in the year to 31 Mar 2025, with £170k profit and 21 employees. The company is classified under “activities of business and employers membership organizations” and is based in London; we hold 3 years of its filed accounts.

Full P&L filedSection S · Other service activitiesSIC 94110Activities of business and employers membership organizations
Status
Active
Location
London, London
Age
125 yrs · since 1900
Type
PRI/LTD BY GUAR/NSC (Private, limited by guarantee, no share capital)

Non-profit. It is limited by guarantee (typically an association, club or management company), so it isn't run for profit. It is excluded from our opportunity lists.

Latest accounts · year to 31 Mar 2025

Key figures

IndependentCapital-lightDoing more with less
Revenue
£24.9m
Growth ▲13%
Profit
£170k
Growth ▼6.3%
Profit margin
0.7%
Gross 15.1%
Employees
21
Change ▼4.5%
Profit / employee
£8.1k
Revenue/employee £1.2m
Profitable streak
2yrs
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 to31 Mar 202331 Mar 202431 Mar 2025
DisclosureFull P&Lread from filing textFull P&Lread from filing textFull P&Lread from filing text
Profit & loss
Revenue (turnover)£14.8m£22.1m£24.9m
Cost of sales£11.6m£18.6m£21.2m
Gross profit£3.2m£3.5m£3.8m
Operating profit£16.9k£190k£202k
Profit before tax£748£216k£257k
Profit after tax−£5.9k£182k£170k
Profit (best available)−£5.9k£182k£170k
Staff costs£2.1m£2.3m£2.4m
Employees (average)—2221
Ratios
Profit margin0%0.8%0.7%
Gross margin21.9%15.9%15.1%
Revenue per employee—£1m£1.2m
Profit per employee—£8.3k£8.1k
Cash conversion−3232%——
Growth (year on year)
Revenue growth—▲49%▲13%
Profit growth——▼6.3%
Headcount growth——▼4.5%
Balance sheet — indirect signals, not revenue
Cash at bank£3m£6.6m£3.1m
Net assets£537k£719k£889k
Fixed assets£855k£776k£866k
Current assets£7m£9.9m£7m
Debtors£2.5m£1.7m£3.3m
Deferred income£5.3m£5.2m£3m
Cash from operations−£547k——
SourceFullAccounts · bulk data Aug 2024FullAccounts · bulk data Aug 2024FullAccounts · bulk data Jul 2025
Derived from the latest filing

How the business works

Profit margin
0.7%
Profit ÷ revenue.
Gross margin
15.1%
Gross profit ÷ revenue. High for software and services.
Revenue per employee
£1.2m
Revenue ÷ average employees.
Profit per employee
£8.1k
Profit ÷ average employees.
Cash conversion
—
Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue
3.5%
Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue
12.2%
Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue
13%
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
▲24%
Now £889k
Cash at bank
▼53%
Now £3.1m
Headcount
▼5%
Now 21
Deferred income
▼42%
Now £3m
Fixed assets
▲12%
Now £866k
Corporate ownership

Group structure

Subsidiaries (1)

From the Persons with Significant Control register (corporate controllers only).

Sources

Latest figures from FullAccounts for the year to 31 Mar 2025 (profit £170k), from the Companies House accounts bulk data published Jul 2025. Spotted an error? Request a correction.

Updated from Companies House on 15 Oct 2026

Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.