The best AI agencies in the UK for small businesses (2026)

Yarigai wrote this page and is one of the 12 agencies on it. The list groups agencies by what a buyer needs. It is not a ranking, no agency paid to appear, and Yarigai contacted none of them.

Yarigai is a done-for-you AI agency in London that builds inside a client's own accounts, and the client owns the code, the data and the accounts from day one. Yarigai quotes a fixed price after a one-week blueprint that puts the payback maths in writing, and its guarantee is one sentence: "If the build isn't profitable for you, we won't build it."

Pick another agency if any of these apply to you:

• You want a published price list before the first call. Yarigai quotes prices after the scope call. Augustova, Softomate and SpotDev publish full price lists.
• You want to start with a small fixed package. Augustova's AI Quick Audit is £495 and its Single Automation is £595 plus £39 a month.
• You need data scientists, custom machine learning or a large regulated programme. Faculty and Brainpool AI do that work.
• You only need one workflow automated. flowio and Happy Webs publish prices for a single workflow.

A small first project at a fixed published price

Augustova, Fitzrovia, London

Augustova builds AI agents, automations, custom AI systems and MVPs. It publishes Starter packages from £495 to £995 and a first agent from £4,000, fixed and ex VAT. It says a first agent typically costs £50 to £250 a month to run, and that the client owns the code and accounts from day one.

Happy Webs, Ashton-under-Lyne, Greater Manchester

Happy Webs builds custom AI agents for jobs such as enquiry triage, quote follow-ups and supplier invoice checks. One workflow across 2 to 3 systems is "From £2,000 excluding VAT", and 3 to 5 workflows are from £5,000. It says simple automations can be live in 1 to 2 weeks.

No-code automation

flowio, Glasgow

flowio builds workflow automation on n8n, with Python for custom code, plus voice agents, chatbots and internal apps. A single workflow starts from £750, and it says most clients invest £1,500 to £15,000. Maintenance starts at £150 a month after 90 days of included support.

Chatbots, voice agents and CRMs from one price list

Softomate Solutions, Stanmore, London

Softomate publishes 35 "from" prices in one guide, most with a monthly plan. Examples, ex VAT: a custom AI chatbot from £5,000 plus £299 a month, a bespoke AI voice agent from £8,000 plus £499 a month, an AI agent from £6,500 plus £399 a month and a bespoke CRM from £15,000 plus £499 a month. Platform fees and usage are extra.

AI agents alongside HubSpot

SpotDev, Bath

SpotDev is a Diamond-tier HubSpot partner that also builds AI agents. It publishes four fixed prices: a £5,000 readiness assessment, £8,000 for a first agent in production, £20,000 for custom agents and £45,000 for a wider programme. It says a first rollout is typically live in two to three weeks.

An agency that runs the agent every month

BRVO, London and Singapore

BRVO builds agents for SMEs, such as lead capture, invoice chasing and support triage, then manages them. A £750 workflow audit is waived if you commit to a build. A two-week sprint for one agent is £2,500 to £6,000, and management is £400 to £1,500 per agent a month, with a 6-month minimum.

An SME build with a refund window

CodeLeap, Camden, London

CodeLeap has built apps, AI agents and automation for UK SMEs since 2019. A one-week AI readiness assessment is £3,000, with "no obligation to build". A single automation starts from £1,500 and support from £400 a month. If you cancel within the first 21 days of a build, it refunds you in full.

Established firms of 20 to 500 staff

Ronins, London and Guildford

Ronins builds AI agents, workflows, knowledge tools and conversational AI. It works mostly with businesses of 20 to 500 people and does its best work at 50 to 250, it says. Discovery workshops are £3,000 to £8,500, a proof of concept is £12,000 to £30,000, and production systems start around £30,000.

Brainpool AI, London

Brainpool AI, founded in 2017, draws on a network of 500+ PhD and MSc-level AI experts and serves "mid-sized enterprises". It publishes a 4 to 6 week proof of concept at £15,000 to £35,000, fixed price, and MVPs at £50,000 to £200,000.

Enterprise and public-sector programmes

Faculty, Old Street, London

Faculty sells AI services, AI safety and red-teaming work, and an AI talent fellowship. Its published case studies include forecasting hospital demand for the NHS and work for the Defence Science and Technology Laboratory and NESO. It publishes no prices.

&above, Southwark, London

&above calls itself "an AI agency for scale-ups and enterprises" and builds automation, agents and AI-native software with an embedded team. It lists Google, Tesco, Revolut and Sage as clients. Its price "depends on scope and engagement model".

A build only if it pays back in year one

Yarigai, London

Yarigai builds AI agents, CRMs, support agents, invoice chasers, internal tools and apps inside the client's own accounts. It publishes no prices. The one-week blueprint sets out what the system replaces, what that costs a year and what the build costs, then gives a fixed price. If the build doesn't come out ahead within the first year, Yarigai doesn't take the job.

Start with one job, match it to a buyer type above, then compare terms in writing. A £595 automation and a £12,000 proof of concept are different projects.

1. Name one workflow and what it costs today. Ten hours a week of admin at £20 an hour is £10,400 a year (10 × £20 × 52).
2. Set that against the build and the running cost. A £4,000 first agent that costs £100 a month to run costs £5,200 in its first year (£4,000 + 12 × £100), so it pays back in year one if it removes about half of those hours.
3. Ask each shortlisted agency the same questions. What is the monthly running cost? Whose accounts does it run in? Who fixes it when it breaks, and how fast? What happens to the code if you leave?
4. Compare written fixed quotes, not ranges.

The guide on how to choose an AI agency lists ten questions to ask any agency, and the AI agency cost survey sets the prices above side by side by offer type.