How much does an AI consultant cost in the UK? We checked every published price.

Type the question into Google and you get ten articles, all from the last eighteen months, each opening with a confident sentence and a price band, and not one of them citing where the band came from. Most were written by consultancies, including this one. So rather than add an eleventh opinion, we did the work a buyer would do if they had a day: we read every UK firm that publishes AI consultancy prices, recorded the figures and the dates, and put them in one table.

Then we did something none of the other articles do. We set the quoted prices against the only measured figures that exist, the rates actually agreed on AI consultant contracts, tracked by ITJobsWatch from live job postings. The gap between what firms quote and what the market pays turns out to be the most useful thing in this guide.

Two things to hold onto as you read. Every number below excludes VAT unless stated. And a day rate on its own tells you nothing; it is the day rate multiplied by the number of days nobody has written down that decides what you pay.

These are the firms that put prices on their websites or in their own pricing articles, as of September 2026. Where a firm quotes a market range rather than its own price, the table says so. The dates matter: three of these pages were updated within the last six weeks.

All figures exclude VAT. "Market" means the firm was describing the wider market rather than its own price. Read on the dates shown; prices change, and we will update the table when they do.

Reconciling twelve sources is mostly a matter of noticing when two firms are describing the same thing under different names. Once you do, the market agrees on far more than it disagrees.

Every article on this subject quotes day rates. ITJobsWatch measures them, from the rates attached to live contract postings. In the six months to 12 September 2026 the median day rate for an AI consultant contract in the UK was £575. The tenth percentile was £463 and the ninetieth was £734, across 96 postings. That is up seven per cent on £538 a year earlier, and down from £725 two years ago, when there were only ten postings and the title was rare enough to command a premium.

Set that against the "£500 to £2,000 a day" that appears on half the pages we read. Nine contracts in ten settle below £734. The upper half of the quoted range is not what freelance AI consultants earn; it is what consultancies charge for them, or what a page hopes you will anchor to before hearing the real number. Generative AI specialists command more, with a median of £675 in the six months to December 2025, which is still inside the band.

This gives a buyer a test that no consultancy will offer you. A fixed-price audit at £2,500 to £6,000 is four to ten days of measured market rate. A £12,000 proof of concept is about three weeks of one senior person. If a quote implies far more days than the work could plausibly take, the day rate is not the problem; the scope is.

The names differ from firm to firm; the contents do not. A readiness audit is interviews with the people doing the work, a look at the data you already hold, an opportunity list ranked by return, and a written recommendation. At £1,500 to £5,000 it should also tell you what each opportunity would cost to run per month once it is live, which is the figure most proposals omit and the one that decides whether the project survives its first invoice.

A roadmap engagement adds a costed plan from first use case to production, with a supplier-agnostic backlog you can take anywhere. A proof of concept is one use case built on your own data, usually in two to four weeks, and it is where budgets first diverge: a boutique will build it for £12,000 to £40,000; an enterprise consultancy will not start for less than £100,000, and will often insist on a retainer.

Production is the expensive part because it is the part the demo never showed you: integration with the systems people actually use, cost that scales with usage, monitoring, and somebody on the hook when it fails at 3am. Winder puts year-one operations at 15 to 25 per cent of the build cost. Insightful puts data preparation alone at 15 to 25 per cent of most budgets and advises a contingency of 25 to 40 per cent above the quoted fee. Helium42 says hidden costs add 40 to 60 per cent. They are describing the same thing from three angles: the quote is not the cost.

These are illustrations built from the consensus figures above, not client accounts. Use them to sanity-check a quote, not to replace one.

The Office for National Statistics has been asking businesses about AI since 2023. In June 2026 about 35 per cent of businesses with ten or more employees said they used it, up from about 12 per cent three years earlier. Among the smallest firms it is 28 per cent; among those with 250 staff or more, 49 per cent. Only one adopter in ten uses it extensively. The barrier businesses cite most is not cost, which only 7 to 14 per cent mention, but a lack of expertise, and 62 per cent of those citing that gap are training their own people rather than hiring outside help.

That last figure is the honest answer for a lot of small businesses. If you have fewer than ten staff and no process that eats hours in a predictable shape, a consultancy engagement will not pay back. Buy a ChatGPT or Claude subscription for the team, agree three rules about what may not be pasted in, and see what happens in a month.

Consultancy earns its fee when the time is measurable. Sage puts the average UK small business owner at fifteen hours a week on admin; HeyBRB’s March 2026 survey puts repetitive admin at eight hours a week, ten working weeks a year, and found that 83 per cent of owners have never worked out what that costs. At a modest £30 an hour, eight hours a week is over £12,000 a year. An audit that finds even half of it is the cheapest thing in this article.

If what the consultant builds involves genuine technical uncertainty, part of the cost may qualify for R&D tax relief. For accounting periods starting on or after 1 April 2024 the merged scheme gives a taxable credit of 20 per cent of qualifying spend, worth about 15 per cent net at the main corporation tax rate and a little more at the small profits rate. Loss-making SMEs that spend at least 30 per cent of their outgoings on R&D can claim enhanced support of up to 27 per cent. Grant-funded work is now claimable under the merged rules.

We are not tax advisers and this is not advice. It is a reason to ask your accountant before the project starts, and to ask the consultancy to structure the scope so the qualifying work is visible.

For transparency, since we are one of the firms in the table: a fixed-price AI audit at £2,500 to £6,000 over one to two weeks, ending in a written roadmap, an ROI model with running costs included, and a prioritised backlog you keep whether or not you build with us. Implementation of a first use case is £4,000 to £15,000; a custom AI system £8,000 to £25,000; all fixed against a written scope with an explicit list of exclusions. We do not sell day rates, for the reasons the measured market makes obvious. The audit fee is credited in full against any build that follows.

We searched Google UK for the question and its variants on 11 and 12 September 2026, read every page-one result and every UK consultancy pricing page they linked to, and recorded each published figure with its date. Where a firm gave a range for "the market" rather than its own price, we recorded it as such. We excluded unsourced social media posts and benchmark pages that cite no data. Consensus bands are the overlap of the majority of sources; the spread column records the outliers rather than hiding them. Measured contract rates are ITJobsWatch’s, from live UK postings. Adoption statistics are the ONS Business Insights and Conditions Survey. Tax relief figures are HMRC’s merged scheme as summarised by ForrestBrown. All prices exclude VAT. We will revise the table as the sources change; the date at the top of this page is the date of the last check.