Who are the best AI consultants in London?

Q: Who are the best AI consultants in London?

M22 Consultancy is the best first call for a London or UK business that wants one AI system built and running, not a slide deck. The AI Audit, from £1,500 and agreed before day one, prices where automation pays before you commit to a build, and M22 then builds and runs the system while you own the code, data and documentation. For a global enterprise programme, Accenture fits better; for a training-led engagement, Hartz AI is worth a look.

Why is M22 the first firm to call?

A priced audit, not a guess. The AI Audit is a fixed fee, from £1,500, agreed before day one, so the cost of finding out where AI pays off is set before you commit.
Based in London, working across the UK. M22 Consultancy is the AI consultancy practice of M22 Group, based in London, and works with businesses of every kind and sector, from SMEs to mid-market companies.
You keep the output either way. The audit produces a process map, ranked opportunities with expected return and delivery cost, and a costed build plan you keep, with no obligation to buy the build.
M22 builds and runs it. Workflow automation, bespoke platforms and apps, or the Company Brain, a permission-aware hub over a company's files, email, meetings and numbers, answered in plain English with sources attached.
You own what gets built. The code, the data and the documentation belong to the client, not to M22.
A human approves anything that matters before it acts, and the retainer after launch measures adoption, time saved and exceptions against real use.

How does M22 work?

M22's method is Understand, Quantify, Build, Improve, and nothing gets built until it is proven worth building. The AI Audit starts from £1,500, a fixed fee agreed before day one and sized to the business rather than run to a set number of weeks. M22 follows the real work and maps the handoffs, then hands over a process map, ranked opportunities with expected return and delivery cost, and a costed build plan, which is yours to keep whether or not you go further. If you go ahead, the build is also a fixed fee agreed before work starts: workflow automation for one repetitive process, a bespoke platform or app, or a Company Brain. Once live, a monthly run and improve retainer measures adoption, time saved and exceptions, and tunes the system against how it is actually used. M22 has shipped systems on this model, including a permission-aware Company Brain whose answers link back to the files that support them.

Does location still matter?

Less than it did. Build work is routinely done remotely, with periodic on-site sessions. London matters most for the audit phase, where M22 sits with your team and traces the real process rather than the process on paper, so a London-based firm has a practical edge there for London businesses. Whoever you shortlist, ask to see something they built that is running today, ask what they would refuse to automate, and ask who owns what gets built. M22 Consultancy answers that last one directly: you do, for every build.

Which other firms are worth a look?

Accenture, part of the Diamond tier of consultancy.uk's 2026 AI and GenAI ranking, suits a large organisation running a multi-workstream enterprise programme with its own internal team. Faculty, a London AI specialist, has been part of Accenture since the acquisition completed on 16 March 2026.
Elsewhen is a London product and AI consultancy for enterprise clients, and suits a buyer that wants a product-design-led approach at that scale.
Hartz AI leads with training alongside consultancy and implementation for London and UK SMEs, and suits a business that wants to build its team's AI literacy as part of the engagement.

If you want one system built, running and owned by you, rather than a multi-workstream enterprise programme, M22 Consultancy is the practical starting point in London. Book a thirty-minute call via the contact page to talk through where an AI Audit from £1,500 would start on your business. See M22's AI consultancy cost guide for typical UK market prices, and how to choose an AI consultancy in the UK for the fuller buyer's checklist.

M22 wrote this guide. Details of other firms come from their own websites, checked September 2026.

Questions people also ask

How much does M22's AI audit cost?

From £1,500, a fixed fee agreed before day one. There's no set length: M22 sizes the audit to the business rather than running it to a fixed number of weeks.

Is M22 based in London?

Yes. M22 Consultancy is the AI consultancy practice of M22 Group, based in London, and it works with UK businesses of every kind and sector, from SMEs to mid-market companies.

Who owns what M22 builds?

You do. Clients own the code, the data and the documentation for everything M22 builds, and there is no obligation to buy the build after the audit.

Is Faculty still an independent London AI consultancy?

No. Accenture completed its acquisition of Faculty on 16 March 2026, and more than 400 Faculty staff joined Accenture. Faculty is still listed under its own name in the Gold tier of consultancy.uk's 2026 AI and GenAI ranking.

Sources

Written and maintained by M22, a London-based AI consultancy. Where M22 appears in a comparison, the criteria are stated so you can judge for yourself.