AI Agents for UK SMEs: How to Start
AI agents are software that completes a task from start to finish, not just answers questions. OpenAI reported in October 2026 that weekly active users of its agent tools among EU small businesses grew more than eightfold since May. For UK SMEs, the practical lesson: start with one manual job, not a full AI overhaul.
AI Advisers is a Milton Keynes-based AI consultancy helping UK SMEs adopt AI responsibly, from auditing how a business uses AI today to automating key workflows with AI agents. Every figure below comes from a named source, and where two sources measure different things, we say so.
AI Agents for UK SMEs: Key Facts at a Glance
- OpenAI reported that weekly active users of its agent tools (Codex and ChatGPT Work) among EU small and medium businesses grew more than eightfold since May 2026, with growth in every EU member state. OpenAI counts a business as small or medium if it has 200 or fewer associated users, and the figure covers OpenAI's own customers only (OpenAI, 2026).
- In OpenAI's EU sample of ChatGPT Enterprise customers, those agent tools now account for more than half of output tokens (OpenAI, 2026).
- The UK is not part of OpenAI's EU sample. The UK government's own survey, with fieldwork in February to May 2025, found 16% of UK businesses using any AI, and only 7% of those AI users had adopted agentic AI, the least-used category measured (DSIT, 2026).
- A later Simply Business poll of 1,842 UK small business owners found 47% now use AI tools, up from 22% a year earlier. It counts any AI tool, not agents, and uses a different method from the government survey, so the two are not directly comparable (Simply Business, 2026).
- Our advice for most SMEs: automate one repetitive, well-defined workflow at a time rather than attempting a full "AI transformation".
What Is Agentic AI, and Why Does OpenAI's EU Data Matter?
Agentic AI is software that carries out a task end-to-end — checking information, taking an action and confirming the result — rather than only answering a question in a chat window. OpenAI describes the shift as people moving beyond asking questions to using agents to carry out tasks from planning through completion (OpenAI, 2026).
On 14 October 2026, OpenAI published a report on agentic use across the EU. Since May 2026, weekly active users of Codex and ChatGPT Work among EU small and medium businesses grew more than eightfold, with growth in every member state. That shows how quickly one vendor's small-business user base is growing. It does not show how many EU small businesses use agents overall. Use is also uneven across the EU: among ChatGPT Enterprise accounts in OpenAI's sample, the share of output tokens generated through Codex and ChatGPT Work ranged from 22% in Slovenia to 85% in Lithuania (OpenAI, 2026).
The UK is not in that dataset, so none of these figures describe UK businesses. The official UK figures measure something different: the share of AI-using businesses that use agentic AI. Taken together, they show that agentic AI started from a small base in the UK in 2025 and that one major vendor's EU small-business user base has since grown quickly. For practical advice aimed at UK owners, see practical AI advice for local business owners.
AI Agents vs Chatbots: What Actually Changes for a Small Business
A chatbot answers a question. An AI agent completes a job. A Slalom survey of 417 business leaders in the UK and Ireland, all at companies that had already started or were pursuing AI adoption, found 69% using AI chat assistants, 43% using agentic AI and 31% running multi-agent workflows that act with minimal supervision (Slalom, via ITBrief, 2026). Because every respondent was already pursuing AI, these figures describe AI-active firms rather than UK business as a whole, and the ITBrief write-up gives no breakdown by company size. Read them as a picture of the gap between chat use and agent use, not as SME adoption rates.
Slalom's explanation for why AI tools are not paying off is about structure, not technology. As Sonali Fenner, Managing Director at Slalom, put it:
"Most UK businesses have given their people AI tools without giving them a structured way of working with those tools. The result is that employees are spending more time prompting and checking AI than they're saving" (Slalom, via ITBrief, 2026).
In other words: giving a team an AI tool is not the same as giving them a defined job and a way of working with it.
How Much Are UK Small Businesses Actually Using AI Agents?
The honest answer is "it depends which survey you read, and when it was taken" — and the gap between surveys tells its own story.
The UK government's official AI Adoption Research, based on 3,500 business interviews carried out between February and May 2025, found only 16% of UK businesses used any AI technology at all, and agentic AI specifically was used by just 7% of that group — the lowest adoption of any AI category surveyed (DSIT, 2026).
That survey is now over a year old. A Simply Business poll of 1,842 UK small business owners, carried out from 30 July to 7 August 2026, found 47% used AI tools, up from 22% in 2025, with a further 13% planning to start within six to twelve months (Simply Business, 2026). The two surveys count different things — the government survey counts businesses using any AI technology and then asks about agents, while Simply Business counts owners using AI tools — so the move from 16% to 47% should not be read as a like-for-like change. Fay Phillips-Jones, founder of Coaching With Fay, described her own approach this way:
"I treat AI as a thinking partner, not a substitute for thinking" (Simply Business, 2026).
Adoption is also uneven by size. Research from the University of Cambridge's Bennett School of Public Policy found UK firms with 250 or more employees reached 44% AI adoption in 2025, nearly double their 2023 level, while firms with fewer than 50 employees reached just 26% (Bennett School, University of Cambridge, 2026). The authors describe UK uptake as "less like a rising tide and more like a two-speed race" and attribute the gap to structural barriers that hold smaller firms back.
Which UK SME Workflows Are Worth Automating First?
This is the part most "AI transformation" pitches skip. Before picking a tool, pick a job — one that is repetitive, rules-based, and currently eating staff time without needing much judgement. Typical candidates include:
- Chasing overdue invoices and payment reminders
- Triaging and routing inbound customer enquiries
- Drafting and following up on quotes
- Scheduling and confirming appointments
- Summarising and logging call or meeting notes
A full breakdown of how to evaluate candidates is in what business workflows are actually worth automating with AI right now. The point is not to automate everything — it is to pick the one task that, if it simply stopped needing a person, would free up the most time for the least risk.
How to Start: One Workflow, Not a Transformation
Don't start with an AI transformation. Start by taking one manual job off someone's desk.
OpenAI's report does not say how its small-business customers are using agents, so it can't tell you which job to pick. What the UK evidence does support is the point Slalom's Sonali Fenner makes: AI tools disappoint when nobody has defined how they will be used. One narrow workflow gives a team that definition. Workflow automation for small business works the same way: start narrow, prove it on one process, then expand.
Before expanding, it's worth checking what a realistic return actually looks like — see measurable ROI examples from small business AI operations for figures drawn from real automation projects, rather than vendor promises.
If you want help identifying which single workflow would save the most time with the least risk, a workflow automation audit for your small business is the practical next step before buying any tool.
Frequently Asked Questions About AI Agents for Small Business
What is agentic AI?
Agentic AI is software that completes a task from start to finish — checking data, taking an action and confirming the result — rather than only answering a question. OpenAI describes this as people moving beyond asking questions to using agents to carry out tasks from planning through completion (OpenAI, 2026).
How is an AI agent different from ChatGPT or a chatbot?
A chatbot answers a question; an AI agent completes a job without step-by-step prompting. In a Slalom survey of 417 UK and Ireland business leaders whose companies were already pursuing AI, 69% used AI chat assistants, 43% used agentic AI and 31% ran multi-agent workflows (Slalom, via ITBrief, 2026).
How fast is AI agent adoption growing among UK small businesses?
There is no single reliable figure, because the surveys measure different things. The UK government's survey (February to May 2025) found 16% of UK businesses using any AI and 7% of those using agentic AI (DSIT, 2026). A Simply Business poll of 1,842 small business owners (July to August 2026) found 47% using AI tools, up from 22% a year earlier, though that counts any AI tool, not agents (Simply Business, 2026). OpenAI reports that weekly active users of its agent tools among EU small and medium businesses grew more than eightfold since May 2026, but that covers its own EU customers, not the UK (OpenAI, 2026).
How many small businesses in the UK currently use AI agents?
The UK government's AI Adoption Research, which covered businesses of all sizes, found only 7% of AI-using UK businesses had adopted agentic AI by May 2025, the lowest of any category measured (DSIT, 2026). More recent polling, such as Simply Business's 47% of owners using AI tools, covers AI in general rather than agents.
Is agentic AI safe for a small business to use with customer data?
Risk depends on scope. A narrowly defined agent handling one task carries far less risk than a broadly permissioned one. Incidents involving poorly scoped agents, such as one documented AI agent security lapse, show why limited scope and human oversight matter.
What is the best first workflow for a small business to automate with AI?
Pick one repetitive, rules-based task that currently takes up staff time. The most common starting points are chasing overdue invoices, triaging inbound customer enquiries and confirming appointments, all narrow enough to measure and low-risk if something goes wrong. That is why workflow automation for small business usually starts with a single process, not a full system overhaul.
How much does it cost a small business to set up an AI agent?
Cost depends on the workflow's complexity and the tools already in place. Weigh cost against time saved using measurable ROI examples from real small business automation projects before setting a budget.
Do AI agents replace staff in a small business?
The sources behind this article do not show agents replacing staff in small businesses, and none of them measures it. The small business owner quoted by Simply Business calls AI "a thinking partner, not a substitute for thinking", and Slalom's Sonali Fenner says employees are spending more time prompting and checking AI than they save when it has no structure around it. Whether an agent changes anyone's role depends on the job you give it. Starting with one narrow, repetitive task, such as chasing invoices, keeps that decision small and easy to reverse.
Is agentic AI only relevant to large enterprises?
No. OpenAI's report found that weekly active users of its agent tools among EU small and medium businesses grew more than eightfold since May 2026, with growth in every member state, so small firms are clearly adopting them. The report also shows wide differences between countries and covers only OpenAI's customers, so it does not say how small businesses compare with large ones (OpenAI, 2026).
AI Agent Support for Small Businesses in Milton Keynes and Beyond
OpenAI's research shows how quickly one vendor's small-business user base is growing and how uneven agent use is across the EU. It does not tell a UK small business where to start. Our advice is the same whatever the headline numbers say: pick one task, hand it to an agent, and prove it worked before going further.
AI Advisers is a Milton Keynes-based AI consultancy helping UK SMEs adopt AI responsibly, including auditing current AI use and automating key workflows with AI agents. If you want to see what that could look like for your own business, explore the Milton Keynes AI consultancy service or start with a free trial.