A single automated workflow costs £900 to £2,500 from a UK studio in 2026 and takes one to two weeks to build. A custom AI assistant that knows your business runs £2,500 to £10,000. Ongoing support, if you want it, adds £900 to £1,750 a month.
Those numbers cover the projects small businesses buy most. The wide gap between a £900 workflow and a £10,000 assistant comes down to scope, and this guide explains where the money goes, what the payback looks like, and which project to buy first.
What UK businesses pay for AI automation
These are the guide prices we quote at ICE WIND:
| Project | Typical UK price | Typical delivery |
|---|---|---|
| AI workflow automation | £900 – £2,500 | 1–2 weeks |
| AI assistant / knowledge bot | £2,500 – £10,000 | 3–8 weeks |
| Extra integration (CRM, accounting, custom API) | £750 – £2,000 each | days, not weeks |
| Ongoing improvements and support | £900 – £1,750 / month | monthly retainer |
A workflow automation is one process, taken end to end: an enquiry that gets qualified, logged and answered; an invoice that gets read, matched and filed; a report that assembles itself every Monday morning. An assistant is a bigger build: it holds your company knowledge, answers questions from staff or customers, and needs guardrails, monitoring and a proper handover.
Independent UK price guides sit in the same range. AI Workforce puts small-business automation projects between a few hundred pounds a month for tools and £1,000 to £10,000 for custom builds. If someone quotes you £30,000 to “transform your business with AI”, ask which single process they will fix first.
Where AI automation is spreading in the UK
Adoption has moved fast. ONS figures put 25% of UK businesses on AI by late 2025, up from 10% two years earlier, and among engaged SMEs the British Chambers of Commerce found 54% using it by March 2026. Marketing and admin lead the use cases: 72% of adopting firms automate there first, according to DSIT’s 2025 research.
The same research carries a warning for anyone about to spend money. 75% of adopters report productivity gains, but only 12% report increased revenue. Automation buys back hours. Whether those hours turn into money depends on what you do with them, and no supplier can promise that part for you.
What drives the price up
Integrations move an AI automation quote more than anything else. A workflow that lives inside one tool stays near the bottom of the range. Every extra system it touches, your CRM, your accounting package, a booking calendar, a legacy database, adds £750 to £2,000 of integration work. Scope these before you sign, because an integration discovered mid-project costs more than one planned from the start.
Data quality is the second lever. AI works with what you give it. If your product information lives in six spreadsheets with three naming conventions, someone pays to clean that up first, either in the project price or in months of wrong answers.
The third is the cost of a mistake. An automation that drafts internal reports can fail cheaply. One that emails your customers or touches invoices needs review steps, logging and guardrails, and that engineering is where a £900 workflow becomes a £2,500 one. We build the checks in from the start rather than bolting them on after the first bad send.
Running costs stay small by comparison. The API calls behind a typical small-business workflow cost pennies to a few pounds a day. You pay a specialist to work out which workflow deserves them, a point we made in our guide to website costs in the UK, and it holds even more for automation.
Which project to buy first
Buy one workflow, not a platform. The businesses that get value from AI in 2026 started with a single process that hurt every week, measured the hours it gave back, then added the next one. The businesses that stalled bought a six-month “AI transformation” and are still in workshops.
Pick the process with three properties: it happens often, it follows rules you can write down, and a mistake in it is cheap to catch. Enquiry handling, quote drafting, invoice matching and weekly reporting all qualify for most firms. Hiring decisions and anything touching payroll do not. If you are not sure which of your processes qualifies, that shortlisting is what our AI consulting work does before anyone commits a build budget.
One more filter: the process should already work manually. Automation speeds up a working process. It cannot fix a broken one, and paying £2,000 to automate chaos gets you faster chaos.
If you want a starting point, describe the process to us through start a project and we will tell you what it costs to automate and, when the honest answer is a £30-a-month off-the-shelf tool, we will say so. Our AI automation page covers the kinds of builds we take on, from single workflows to assistants with company knowledge.
The questions to ask any supplier
Ask what happens when the AI is wrong, because it will be sometimes. A serious supplier shows you the review step, the logs and the fallback. A seller of magic changes the subject.
Ask who owns the prompts, the workflow definitions and the data. The answer should be you, in writing. UK GDPR applies to automated processing the same as to any other kind, and if the supplier handles personal data they should hold an ICO registration. We publish ours, along with company registration and insurance, on our trust page.
Ask for the monthly running cost in writing: API usage, hosting, tool licences. For a typical single workflow that lands between £20 and £150 a month, and you want that number before you sign, not on the first invoice.