Market snapshot
Pricing for AI Development agencies in London
Of the 26 AI development agencies on this page, 17 carry complete hourly rate ranges. Across them, rates span €20–€260, with a median around €65/hr. Across the register, rated agencies in London bill €65–120/hr (20 rated).
“Of the 26 AI development agencies in London on AIAgencies.eu, 17 carry an hourly rate range, from the agency itself or a third-party directory; the median of those 17 is about €65/hr (November 2026).” https:/
/ www. aiagencies. eu/ services/ ai- development/ london# market- snapshot
European AI agency hourly rates by country and region →
| Tier | Hourly rate | Agencies |
|---|---|---|
| Budget | Under €100/hr | 10—Imobisoft, N-iX, Marionete, Softblues, Hexploits, Old St Labs, Vention, Opinov8, +2 more |
| Mid-tier | €100–149/hr | 4—Kortical, iCentric Agency, Transparity, Mercury Labs |
| Premium | €150–199/hr | 2—Brainpool, Kelriva AI |
| Top tier | €200+/hr | 1—Fast Data Science |
Team capacity in London
Of the 26 agencies on this page, 24 disclose team size. The distribution breaks down as:
- Boutique (<10)6 agencies—Fast Data Science, Kortical, Nebuli, Hexploits, Kelriva AI, Molo Agency
- Small/mid (10-49)6 agencies—Brainpool, Imobisoft, iCentric Agency, Marionete, Softblues, Mercury Labs
- Mid studio (50-99)7 agencies—Datatonic, Satalia, Datasparq, Elsewhen, Neurons Lab, Tom & Co, Old St Labs
- Large studio (100+)5 agencies—N-iX, Transparity, Vention, Opinov8, Pixelette Technologies
Ranked agencies
Rankings updated · Newest review
Datatonic
#1London, United Kingdom
Client evidence: 8 documented clients overall
Best for: Enterprises standardizing ML delivery on Google Cloud or AWS, especially where a regulator has to be satisfied.
Satalia
#2London, United Kingdom
Client evidence: 6 documented clients overall
Best for: Enterprises with a scheduling, routing or workforce-allocation problem big enough to justify operations-research specialists.
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Faculty
#3London, United Kingdom
Client evidence: 3 documented clients overall
Best for: Enterprises and public bodies that need AI deployed under regulatory or safety scrutiny.
Fast Data Science
#4London, United Kingdom
Client evidence: 8 documented clients overall
Best for: Pharma, research and public-sector buyers with an NLP problem on unstructured documents that has to survive review.
Brainpool
#5London, United Kingdom
Client evidence: 3 documented clients overall
Best for: Operators with a measurable production bottleneck AI can remove—from timber design queues to e-commerce pipelines.
Imobisoft
#6London, United Kingdom
Client evidence: 4 documented clients overall
Best for: Health and industrial companies taking a risk-scoring or compliance-reporting workflow from paper to a regulated digital platform.
Kortical
#7London, United Kingdom
Client evidence: 8 documented clients overall
Best for: Enterprises with a defined prediction or document-automation problem that want a model in production in weeks.
Datasparq
#8London, United Kingdom
Client evidence: 6 documented clients overall
Best for: Operational businesses with data already flowing that want a system built on it rather than a strategy deck.
Elsewhen
#9London, United Kingdom
Elsewhen is a London product consultancy working with technology and financial-services companies, pairing product design and engineering with AI and cloud delivery.
Neurons Lab
#10London, United Kingdom
Client evidence: 2 documented clients overall
Best for: Financial institutions that need agentic AI shipped inside regulatory constraints—training through production.
N-iX
#11London, United Kingdom
Client evidence: 4 documented clients overall
Best for: Enterprises with large in-house engineering teams that want AI adoption or ML work measured against an agreed baseline.
Tom & Co
#12London, United Kingdom
Tom & Co is a London e-commerce agency building Adobe Commerce and headless storefronts for retail brands, with a separate AI practice covering generative imagery and workflow automation.
iCentric Agency
#13London, United Kingdom
iCentric Agency is a London and Bedfordshire digital consultancy building custom platforms for enterprise clients, with machine-learning pricing, document processing and agentic tooling among its published specialisms.
Marionete
#14London, United Kingdom
Client evidence: 6 documented clients overall
Best for: Banks and insurers that need the data and MLOps platform under their AI built to regulated-industry standards.
Transparity
#15London, United Kingdom
Client evidence: 8 documented clients overall
Best for: UK enterprises, charities and public bodies already on Microsoft 365 and Azure that want Copilot adopted and governed.
Softblues
#16London, United Kingdom
Client evidence: 5 documented clients overall
Best for: Early-stage B2B product teams and smaller UK or Irish firms scoping a first voice agent, agent pipeline or Claude rollout.
Nebuli
#17London, United Kingdom
Client evidence: 5 documented clients overall
Best for: Organizations wanting a private, self-hosted generative AI workspace over their own documents rather than a public LLM.
The AI Consultancy
#18London, United Kingdom
Client evidence: 2 documented clients overall
Best for: UK small businesses that want a working system and a named person answering the phone.
Hexploits
#19London, United Kingdom
Hexploits is a London software consultancy that builds AI platforms and cloud infrastructure for startups, taking product engineering from architecture through to production hosting.
Old St Labs
#20London, United Kingdom
Client evidence: 29 documented clients overall
Best for: Founders and small UK firms building a first web or mobile product with an LLM feature inside it.
Vention
#21London, United Kingdom
Client evidence: 10 documented clients overall
Best for: Venture-backed product companies adding engineers to an existing team, with AI as one feature inside the software work.
Kelriva AI
Verified: the agency confirmed ownership from a company email address, and the listing passed editorial review#22London, United Kingdom
Kelriva AI is a London AI consultancy that builds document processing systems and AI agents for UK businesses, with a focus on regulated sectors such as financial services. We automate the extraction, checking and routing of data from contracts, KYC files, compliance filings and invoices, and build LangGraph agents that take over multi-step approval and review workflows. Every engagement is scoped in writing and delivered at a fixed fee. We work vendor-neutral and build on the systems a business already uses.
Mercury Labs
#23London, United Kingdom
Client evidence: 6 documented clients overall
Best for: UK public bodies and publicly funded research programs building AI tools that keep expert reviewers in charge.
Opinov8
#24London, United Kingdom
Client evidence: 6 documented clients overall
Best for: Teams adding cloud, data or modernization engineers who want AI coding tools applied to that delivery.
Pixelette Technologies
#25London, United Kingdom
Client evidence: 13 documented clients overall
Best for: Founders commissioning a first blockchain or AI product build on a startup budget who will check references before signing.
Molo Agency
#26London, United Kingdom
Molo Agency is a north London digital studio designing websites and running SEO and paid media for small and mid-sized UK businesses, with AI agent and automation services on offer.
Industry experience among London AI Development agencies
Of the 26 agencies on this page, 26 publish their industry focus. Among those:
| Industry | Agencies with stated experience |
|---|---|
| FinTech | 16 of 26 — Datatonic, Satalia, Faculty, Brainpool, Kortical, Datasparq, Elsewhen, Neurons Lab, N-iX, Marionete, Transparity, Vention, Kelriva AI, Mercury Labs, Opinov8, Pixelette Technologies |
| SaaS & B2B | 14 of 26 — Fast Data Science, Elsewhen, N-iX, iCentric Agency, Marionete, Transparity, Softblues, Nebuli, Hexploits, Old St Labs, Vention, Kelriva AI, Opinov8, Pixelette Technologies |
| E-commerce | 13 of 26 — Datatonic, Satalia, Brainpool, Imobisoft, Datasparq, Tom & Co, iCentric Agency, Softblues, Old St Labs, Vention, Opinov8, Pixelette Technologies, Molo Agency |
| Healthcare | 11 of 26 — Datatonic, Faculty, Fast Data Science, Imobisoft, Kortical, Transparity, Softblues, Nebuli, The AI Consultancy, Old St Labs, Mercury Labs |
| Manufacturing | 8 of 26 — Satalia, Brainpool, Imobisoft, Kortical, Datasparq, N-iX, Marionete, Opinov8 |
| Public Sector | 5 of 26 — Faculty, Fast Data Science, Transparity, Nebuli, Mercury Labs |
| Legal | 2 of 26 — Faculty, Softblues |
Services frequently bundled with AI Development in London
Beyond AI Development itself, agencies on this page most commonly offer:
- AI Consulting24 of 26 — Datatonic, Satalia, Faculty, Fast Data Science, +20 more
- Generative AI14 of 26 — Datatonic, Faculty, Imobisoft, Kortical, +10 more
- AI Agents14 of 26 — Satalia, Faculty, Datasparq, Neurons Lab, +10 more
- AI Automation9 of 26 — Faculty, Brainpool, Tom & Co, iCentric Agency, +5 more
Frequently asked questions — AI Development in London
- How much do AI Development agencies in London charge?
- Of the 26 AI Development agencies on this page, 17 publish complete hourly rate ranges. They range from €20 to €260, with a median around €65. Across the register, rated agencies in London bill €65–120/hr (20 rated). 10 agencies operate under €100/hr: Imobisoft, N-iX, Marionete, Softblues.
- Which are the top-rated AI Development agencies in London?
- Based on our editorial scoring (portfolio quality, business credibility, and case study depth), the top-ranked AI Development agencies in London are Datatonic, Satalia, Faculty. See the full review on each agency's profile.
- Are there London AI Development agencies specializing in FinTech?
- Yes — 16 agencies on this page list FinTech experience. Top examples include Datatonic, Satalia, Faculty.
- How recent are these AI Development agency reviews?
- 25 of the 26 agencies on this page have been editorially reviewed between Aug 4, 2026 and Sep 24, 2026 — the most recent being Molo Agency. See our review methodology for how scores are calculated.
- What's the smallest team size available for ai development in London?
- Fast Data Science, Kortical, Nebuli are the boutique studios (under 10 people) on this page, ideal for projects needing senior-level attention without large-team overhead.
Local Insight
AI Development Agencies in London
Custom AI development is London's broadest category and the largest single roster on this site. The heavyweights build at enterprise scale: Faculty (applied AI since 2014, from the NHS to Tide), Datatonic (Vodafone's AI Booster and GenOps work on Google Cloud), Satalia (optimization systems for Tesco and DFS) and Brainpool (bespoke machine learning, HSBC among published clients). The specialists go deeper on narrower ground: Kortical publishes 90% accuracy and 50x productivity on Deloitte tax automation and predictive maintenance that saved Ford a stated 122,000 hours of downtime, Fast Data Science builds clinical and pharma language models, Datasparq builds pricing and routing, Mercury Labs runs discovery-to-production for government departments, and Nebuli builds private generative workspaces. Neurons Lab, Elsewhen, Hexploits, iCentric, Tom & Co and The AI Consultancy fill in regulated finance, product engineering, agent infrastructure, pricing, commerce imagery and the SME end, and Marionete builds the enterprise data platforms and self-service data science environments that enterprise models depend on. Molo Agency also lists AI development, though its published case studies are websites, SEO, paid media and Shopify work.
Development engagements are where stack specificity matters most—which models, whose infrastructure, what happens to the system after handover. Many agencies here publish named-client case studies and others publish the architecture without the client; treat reluctance to do either as information. With this many firms on the page, sort by size fit before capability: a five-person specialist and a two-hundred-person consultancy will not answer the same brief.
Intro by Gabor Kiss, curator · How we rank
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