Human-in-the-loop means a person reviews and approves an AI output before it takes effect. It is the practical control behind most AI governance commitments, and it only works when it is specific: naming which decisions require review, by whom, and what evidence is kept of the review having happened.
Why it matters for a UK business
It is the control almost every governance framework leans on hardest, and the one most likely to be quietly removed six months in when it starts feeling like friction. Keeping it is a discipline, not a setting.
What it looks like in practice
A person approves before an AI output takes effect. The model drafts the client email; a human sends it. The model proposes a stock reorder; a human signs it. The output is never wrong-and-live at the same time.
What to do about it
Decide, per workflow, where the human sits and what they are actually checking. A tick-box approval nobody reads is worse than none, because it creates the appearance of oversight without the substance.
Related terms
Read next
AI governance for UK SMEs, in practice → · All 22 terms in the glossary · The resource library
If this is the term that has come up in your business and you want it worked through against your own situation rather than in the abstract, that is a conversation, not a page.
Speak to ChrisWritten by Chris Duffy. Last reviewed .
