The short version: Before you hire an AI marketing consultancy, ask to see three things: a real client result with actual numbers attached, a plain answer on who does the hands-on work, and a straight explanation of what happens to your data and your content once the contract ends. If any of those three answers get vague, walk away.
I get pitched by AI marketing consultancies most weeks now. Some are one person with a laptop and a good LinkedIn profile. Some are twelve-person outfits with an office in Shoreditch and a deck full of logos. The quality gap between them has nothing to do with size, and everything to do with whether they'll answer a handful of blunt questions without flinching.
I've hired agencies and consultants for 21 years running my own business. I've also been on the other side, sitting in rooms as the "expert" being vetted. So this isn't theory. This is what I'd tell a friend who was about to sign a proposal this week.
Ask to see the AI, not just hear about it
Last year a consultancy pitched me directly. Nice deck, good energy, the word "AI-powered" on every second slide. Then I read their case study. It referenced a client called "a leading fabrics manufacturer in the North" with a 340% increase in qualified leads over six months. No name, no link, no way to check it. When I asked which client that was, the founder went quiet for a second too long and then said he'd "have to check with legal about sharing names."
That's not a data protection issue. Real case studies almost always have a named client, or at minimum a verifiable industry detail you can cross-check. What I suspect happened, based on the phrasing and the suspiciously round number, is that the whole case study was written by ChatGPT with no real client behind it at all. It read like a hallucination because it probably was one.
So before you hire anyone, ask to see the actual output. Not a testimonial slide. The real dashboard, the real email sequence, the real ad copy they wrote for another client (redacted for confidentiality if needed, but real). Any consultancy worth its day rate will show you this in the first call without being asked twice.
Find out who is doing the actual work
This is the question most people forget to ask, and it's the one that matters most. A lot of AI marketing consultancies are now a senior person who sells the work, and a junior freelancer or subcontractor in another country who does it. That's not automatically bad. Some of the best output I've seen has come from small distributed teams. But you need to know it's happening, because it changes how you manage the relationship.
Ask directly: "Who will be on my account day to day, and will I ever speak to them?" If the answer involves a name you never hear again after the sales call, build that into your expectations from day one.
This matters even more if you're comparing options across markets. If you're a founder outside the UK weighing this up, my guides on hiring an AI marketing consultant in the USA, an AI marketing consultant in Canada, or an AI marketing consultant in Australia all go into the specific pricing and structure norms for each market, because the same red flags show up differently depending on where you are.
Check the actual pricing against what's normal
In the UK right now, a solid freelance AI marketing consultant charges somewhere between £600 and £1,200 a day. A small consultancy with a couple of specialists usually prices projects at £3,000 to £15,000 depending on scope, or a monthly retainer of £1,500 to £5,000. If you're being quoted £25,000 for a "full AI marketing transformation" with no clear deliverables list, that's not automatically a scam, but it's a sign you need a much more detailed scope of work before you sign anything.
Here's the part nobody likes to say out loud: the cheapest option is often the most expensive one in the end. I've seen small businesses hire a £400-a-month AI content package, get twelve months of generic blog posts that Google quietly stopped ranking after an update, and then pay a proper consultant £8,000 to rebuild the content strategy from scratch a year later. Cheap AI marketing work doesn't fail loudly. It fails quietly, over months, and by the time you notice, you've lost the time as well as the money.
Ask what happens to your data and your content after the contract ends
This is the one clause that gets skipped in almost every proposal I've read. Where does your customer data sit while they're working with it? Is it going into a shared AI tool where other clients' prompts and data might mix with yours? Who owns the content, the workflows, and the custom GPTs or automations they build for you once you stop paying them?
I've seen contracts where the consultancy retained ownership of every automation and prompt library they built, meaning the client walked away with nothing reusable when the relationship ended. Get this in writing before you start, not after a dispute.
Get a straight answer on which tools they use
Ask for the specific tool stack. Not "we use cutting-edge AI technology," an actual list. ChatGPT Enterprise or the standard version? Claude? Jasper? Their own custom-built tools? Then ask why they chose those over the alternatives. A consultant who can explain the tradeoffs between, say, Claude for long-form writing and a specialist SEO tool for keyword research knows their craft. One who just says "we use the best AI available" is reciting a sales line.
This ties directly into a bigger shift worth understanding before you hire anyone: how AI search itself is now shaping who gets found and recommended in the first place. I wrote about this in detail in what Google AI Mode says about AI marketing consultants in 2026, and it changes what "good SEO work" even means right now.
Want AI doing the heavy lifting in your marketing?
I build the systems that handle the boring 80 percent, so you get your week back. Done properly, with the human kept in.
Look at their own marketing, not just their client work
If a consultancy sells AI marketing but their own website hasn't been updated since 2023, their LinkedIn posts are clearly AI-generated with no editing, and their email newsletter (if they have one) reads like a template nobody proofread, that tells you something. Not that they're incompetent necessarily, but that they may not practise what they charge you for. I always check three things on a prospective consultancy: their own site's load speed, whether their recent case studies have dates on them, and whether their "team" page has real photos or stock images. Stock images on a team page is a small thing, but it usually correlates with a bigger gap between the pitch and the reality.
Decide whether you need a consultancy at all, or something else entirely
Sometimes what a business needs isn't an AI marketing consultancy, it's someone senior who can set direction across the whole marketing function and then decide where AI tools fit in, rather than starting with the AI and working backwards. If your marketing has no clear strategy at all, an AI consultancy will just help you do the wrong things faster. In that case, look at what a fractional CMO does and when to hire one instead, because that role often solves the actual problem before AI tools even come into it.
A short checklist before you sign anything
- Ask for one named, checkable client case study with real numbers
- Find out exactly who does the day-to-day work, by name
- Get the tool stack in writing, not "cutting-edge AI"
- Clarify who owns the content, prompts, and automations after the contract ends
- Check where your data sits while they work with it
- Compare the quote against typical UK day rates (£600 to £1,200) or retainers (£1,500 to £5,000 a month)
- Look at their own site and content, not just their sales deck
If you're based in the UK and want a fuller breakdown of pricing, credentials, and the questions worth asking before you commit, I put together a longer guide on hiring AI consultants for UK small business after 21 years of watching this industry from the inside. It's the one I wish I'd had ten years ago when I was doing the vetting myself with no template to work from.
None of this is complicated. It just takes ten more minutes on a call than most people are willing to spend before they get excited about a good-looking proposal. Spend the ten minutes.
Frequently asked questions
How much should an AI marketing consultancy cost in 2026?
In the UK, expect £600 to £1,200 a day for a solid freelance consultant, £3,000 to £15,000 for a scoped project, or £1,500 to £5,000 a month for an ongoing retainer. Anything well outside that range needs a much more detailed scope of work before you agree to it.
What's the biggest red flag when vetting an AI marketing consultancy?
Vague or unverifiable case studies. If a consultancy can't name a client or point you to a real, checkable result, be sceptical of everything else in the pitch too.
Should I ask who does the work day to day?
Yes, always. Many AI marketing consultancies subcontract the hands-on work to freelancers you'll never speak to directly. That's not always a problem, but you need to know it's happening so you can manage the relationship.
What happens to my content and data if I stop working with the consultancy?
That should be written into the contract before you start. Ask who owns the automations, prompt libraries, and content produced, and confirm where your customer data has been stored while they worked with it.
Further reading
Related reading: How to Grow a TikTok Following Without Paid Ads and How AI Tools Can Improve Your Resume Writing (Without Making It Sound Like Everyone Else's).
Want the complete version? Read where I break down AI marketing.
