Buying guide

How to choose an AI automation agency in the UK: a checklist

The questions to ask, the documents to request and the red flags to watch for before you hire an AI or automation agency in the UK.

Published · Updated · By the TrustedAIAgencies editorial team

Hiring an AI automation agency is less about finding the most impressive demo and more about finding a team that will build something reliable, maintainable and lawful. Use this checklist when you speak to agencies, including the ones in our directory.

1. Start with the problem, not the technology

Before any calls, write down:

  • the process you want to improve (for example, “turning web enquiries into booked calls”),
  • roughly how often it happens and how long it takes now,
  • the systems involved (inbox, CRM, accounting software, spreadsheets).

A good agency will ask about these before recommending tools. Be cautious if the first conversation is about a specific AI product rather than your process.

2. Check the company is real

  • Search the business on Companies House to confirm it is registered and active, and that the name matches your contract.
  • Look for case studies with detail you can check: named clients, described processes, before-and-after workflows.
  • Ask for one or two references you can actually speak to.

3. Ask these questions

  1. Which platform would you use, and why? (See our n8n vs Make vs Zapier guide.)
  2. Who owns the accounts, workflows and code at the end of the project?
  3. What happens when something fails? How are errors detected, retried and reported?
  4. Where is our data processed and stored? Which sub-processors (AI model providers, hosting) are involved?
  5. Where does a person stay in the loop? Especially for anything customer-facing or decision-making.
  6. What are the monthly running costs, separate from the build fee? (See our cost guide.)
  7. What documentation and handover will we get?

4. Data protection is your responsibility too

If the automation processes personal data, UK GDPR applies, and as the business you are usually the data controller. Ask the agency to:

  • sign a data processing agreement where they handle personal data,
  • list the AI and hosting providers data will pass through,
  • explain how people’s rights (access, correction, objection) will still be met.

If a system makes decisions about people that have legal or similarly significant effects (for example, automatically rejecting an application), the rules on automated decision-making apply. The ICO’s guidance is the authoritative starting point.

5. Red flags

  • Guaranteed results or “replace your team” promises with no discovery work.
  • Refusal to put accounts or code in your name.
  • No written scope, or scope that only lists tools rather than outcomes.
  • Pressure to sign a long retainer before a pilot.
  • Reviews or logos you cannot verify anywhere else.

6. Start small

A fixed-price audit or one well-defined workflow is the safest first step. If it goes well, expand.

Want a shortlist? Get matched with up to three UK agencies, free and with no obligation, or browse the directory.

Quick answers

How can I check a UK agency is a real company?
Search the company name on Companies House to confirm it is registered, active and has filed accounts, and check that the registered name matches the contract you sign.
What UK data protection rules apply to AI automation?
UK GDPR applies whenever personal data is processed. If an automated system makes decisions with legal or similarly significant effects on people, there are extra rules about automated decision-making. The ICO publishes guidance on both.
Should I start with a small project?
Usually, yes. A paid audit or a single, well-defined workflow lets you judge an agency's quality before committing to a larger build.

Sources

  1. Companies House: search the register
  2. ICO: Rights related to automated decision-making including profiling
  3. ICO: How do we ensure individual rights in our AI systems?