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Our sources

Where our numbers come from

This page lists the published sources behind statistics on our site. Each one links to the publication we read and shows when we last checked it.

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This page lists the published sources behind statistics Hartz AI quotes on hartzai.com, each checked in October 2026 against the publication it links to. UK official sources come first, and global or large-company studies are labelled as such. Where a survey reached us through a news report, we name both. Our own figures are listed separately.

How do we check a figure?

Hartz AI has checked each source on this page against the publication it links to. For every figure we quote from it, we compared the number, the group of people it describes and the year. Where a figure did not match, we corrected it or took it down. Where we read a survey in a news report rather than from the organisation that ran it, the list names both.

Hartz AI uses UK official sources, such as the ONS, DSIT and Acas, as its first choice for a headline figure. Research from consultancies and from outside the UK is context, so we list it separately as global or large-company research.

If you think a figure on our site is wrong or out of date, please tell us.

Official statistics, government, regulators and law

Figures from UK official sources are our first choice for a headline. Law and regulation are listed here too.

UK research and professional bodies

Research, surveys and announcements from UK professional bodies, standards bodies, charities and the trade press. Where someone else reported a survey, we name both.

Global and large-company research

These studies are not about UK SMEs. They cover other countries, many countries at once or large organisations. We use them for context. They are not UK SME figures.

Which figures are our own?

Three figures on our site come from our own work, not from published research. This is what each one is based on.

  • 500+ professionals trained

    Based on: Hartz AI internal records.

  • 85% of clients self-sufficient in AI within 12 months

    Based on: Hartz AI client outcomes.

  • 90% confidence increase post-training

    Based on: Hartz AI post-training surveys.

Common questions

Questions about our sources

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