Why the creative software market in England has no revenue figure, and what to measure instead

There is no defensible England software-revenue total in the primary records checked on 5 September 2026. Public data can describe registered businesses and UK advertising investment, but it cannot answer how much English organisations pay for creative applications. A market case should label that gap instead of filling it with a percentage assumption.

What to take away

Three measurements that must stay separate

The ONS business activity dataset is the correct starting point for an English addressable-business count. Its 2025 edition uses an Inter-Departmental Business Register snapshot taken on 14 March 2025. The workbook includes enterprises and local units by detailed industry and region.

ONS reported 2,734,615 VAT or PAYE registered enterprises across the UK at that reference point. That national total is useful for scale and coverage checks, not the numerator for this niche.

An analyst must choose relevant industries, decide whether an enterprise or site is the purchasing unit, and sum only the nine English regions. Even the resulting England count would show possible organisations, not buyers or revenue.

The IAB UK 2025 study measures another thing: £40.5 billion of UK digital advertising investment during 2025. IAB says the study covers submissions, public figures and modelling, and its methodology changed from the first half of 2025. The figure is UK-wide and pays for digital advertising activity as defined by the study. It is not software expenditure.

The AA/WARC expenditure release reports £46.7 billion of total UK advertising investment in 2025 under refreshed channel definitions. This series overlaps with the IAB measure. It cannot be added to the digital total, allocated to England without regional evidence, or multiplied by an assumed software share.

Comparability needs its own note. IAB says its methodology changed during 2025 and the previous year's estimate was restated. AA/WARC introduced revised public channel definitions, including standalone social-media and retail-media categories. Preserve the publisher's definition with every number, and do not construct a trend by joining incompatible editions.

Build an addressable base without calling it revenue

Use the ONS workbook to create a reproducible prospect count. Record the reference date, selected SIC codes, nine English regions, unit type and any exclusions. Advertising agencies may be one relevant industry, but in-house buyers sit across many sectors. A wide sector selection increases coverage and weakens the link to actual need.

Then test the count with direct research. A useful worksheet has four columns: eligible organisations, reachable organisations, organisations with the chosen workflow problem, and organisations with a confirmed budget route. Keep observed counts separate from assumptions.

A revenue scenario may be written as:

validated buyers x evidenced annual contract value = scenario revenue

Neither input should come from national ad spend. The buyer number should arise from documented outreach or a representative study. Contract value should come from signed orders, dated quotes or clearly marked pricing research. Until then, the output is a planning scenario rather than market size.

Store the calculation beside the source extract. Another analyst should be able to reproduce the regional sum, see which organisations were removed, and distinguish measured values from assumptions. If the source workbook changes, date the replacement rather than silently overwriting the earlier case.

The decision this evidence supports

The records justify researching an England proposition because a measurable business base and substantial UK media activity exist. They do not justify a launch, a sales forecast or a claim about total addressable software revenue.

Before publishing a numeric England estimate, retain the ONS extract, calculation and selection notes. Before committing capital, secure evidence that a defined English buyer group has the problem, purchasing authority and an acceptable price. If any of those elements is missing, report the evidence gap plainly.

Before you act

Common questions

Why can the ONS enterprise total not be used as the England software revenue figure?

The ONS total of 2,734,615 registered enterprises covers the whole UK at 14 March 2025. It shows possible organisations, not buyers or revenue. An analyst must still choose industries, decide the purchasing unit and sum only the nine English regions.

Why can the IAB and AA/WARC advertising figures not be added together?

The IAB study reports £40.5 billion of UK digital advertising investment in 2025, while AA/WARC reports £46.7 billion of total UK advertising investment under refreshed channel definitions. The series overlap, so adding them would double count. Neither measures software expenditure.

What evidence is needed before committing capital to an England proposition?

Secure evidence that a defined English buyer group has the problem, purchasing authority and an acceptable price. Contract value should come from signed orders, dated quotes or clearly marked pricing research. If any element is missing, report the evidence gap plainly.