Top AI Development Companies in London (2026)
The top AI development companies in London in 2026 include Gravity Base, Datatonic, Deeper Insights, Transparity, Infinum, Opinov8, Innovify and Faculty.
However, each one focuses on different types of AI projects and clients. For instance:
- Faculty works with large organisations and public-sector bodies on major AI programmes.
- Similarly, Datatonic helps companies build data and AI systems on Google Cloud.
- Likewise, Transparity focuses on Microsoft Azure and related AI tools.
- Meanwhile, Deeper Insights builds custom machine learning models for specific business needs.
- Finally, Gravity Base builds AI systems for small and medium-sized businesses, typically delivering them within 4 to 12 weeks.
What to Look for in the Top AI Development Companies in London
London has one of the largest AI ecosystems in Europe, so the hard part isn't finding an AI company. Instead, it's finding one that has built and launched the type of AI system you need. For this reason, below you can compare 8 AI development companies in London, UK, based on what they build and the types of clients they serve.
Disclosure: Gravity Base published this article and is included in the list. We selected the other seven companies based on their presence in London and their AI development work, which we checked on each company's website in October 2026. The companies are listed for comparison, not in order of quality.
8 Top AI Development Companies in London at a Glance
| Company | London presence | Best for | Known for |
|---|---|---|---|
| Gravity Base | Serves London (based in Dubai) | SMEs and mid-sized firms that want a full AI build fast | AI chatbots, automation, AI apps, generative AI, 4–12 week delivery |
| Faculty | London HQ, Old Street | Large organisations and the public sector | Applied AI for health, defence, energy and government |
| Datatonic | London office, Canary Wharf | Companies on Google Cloud | Data and AI on Google Cloud, generative AI with Gemini |
| Deeper Insights | London-based | Custom machine learning models | Bespoke ML, NLP and deep learning, with clients owning the model IP |
| Transparity | London office, Paddington | Companies on Microsoft and Azure | Microsoft AI, Azure AI and Copilot solutions |
| Infinum | London office, Devonshire Square | AI inside web and mobile products | Product design and engineering, AI agents, custom LLMs |
| Opinov8 | London HQ | AI agents and legacy modernisation | AI-native engineering, cloud and data |
| Innovify | London-based | Fintech AI products | AI-native fintech: payments, lending, insurance |
Details of the Top AI Development Companies in London in 2026
1. Gravity Base
Gravity Base is an AI development company based in Dubai. Above all, its team builds AI systems that are ready to use in daily operations for businesses in London and across the UK.
Its founders have worked on consumer AI since 2014, and since then the company has delivered more than 250 AI solutions so far. In addition, they typically put each solution they create into use within 4 to 12 weeks.
- What it builds: AI chatbot development in London for web and WhatsApp, workflow automation as an AI automation agency in London, AI-powered apps, generative AI on your own data, and machine learning.
- Best for: Small and mid-sized companies that want one team to plan, build and support an AI system, instead of hiring AI staff in-house.
- Worth knowing: Gravity Base also offers AI consultancy in London for firms that haven't picked their first AI project yet.
To see all their services, visit the AI development company in London page.
2. Faculty
Faculty is an applied AI company, which means it builds artificial intelligence software that organisations use in their daily work. Moreover, its headquarters are on Old Street in London.
Specifically, the company works with organisations in energy, defence, health and care, financial services and public services. Its published case studies include work with the NHS, NESO and Dstl.
In addition, Faculty has contributed to safety red-teaming for OpenAI. In other words, it tested OpenAI's AI systems by trying to make them fail, so that OpenAI could find and fix their weaknesses.
- Best for: Large organisations and public bodies that run AI programmes where mistakes carry serious consequences.
- Worth knowing: Faculty runs a fellowship programme and places AI specialists with clients. As a result, it suits both buyers who want to build their own in-house AI team and buyers who want to build AI products.
3. Datatonic
Datatonic is a cloud data and AI consultancy that helps businesses move their data to the cloud and build AI systems. It has an office at One Canada Square, Canary Wharf.
Also, Datatonic is a Google Cloud partner, which means it works with Google's cloud computing service. The company received the 2025 Google Cloud Partner of the Year award for Data and Analytics in EMEA, the region covering Europe, the Middle East and Africa.
For example, its services include generative AI with Gemini, cloud data migration, Looker and managed services.
- Best for: Companies already on Google Cloud, especially in financial services, retail, media, gaming and telecoms.
4. Deeper Insights
Deeper Insights is a London-based AI consultancy. In particular, it builds custom AI models for businesses that need solutions designed for their specific needs rather than ready-made AI tools.
Its team develops custom machine learning, deep learning and NLP models. On top of that, Deeper Insights offers managed AI services, including hosting, retraining and monitoring.
Moreover, its Floating Point platform lets clients train AI models with Deeper Insights and own the IP (intellectual property, the legal ownership of the models) that the platform produces.
- Best for: Companies that need custom machine learning models built for their specific requirements.
5. Transparity
Transparity is a Microsoft services partner based at Paddington Central in London, next to the headquarters of Microsoft UK. As a result, it advises organisations on AI, builds Microsoft AI solutions through its "AI Factory" approach, and provides Azure, data and security services.
- Best for: Organisations that already use Microsoft 365 and Azure and want to add AI tools such as Microsoft 365 Copilot or build solutions on Azure AI.
6. Infinum
Infinum is an international digital product agency with an office in Devonshire Square, London. The company develops AI features, including AI agents, custom large language models and predictive analytics. Besides AI, it also designs and builds websites, mobile apps and other digital products for businesses.
- Best for: Product teams that want to add AI features to an app or digital platform that their customers use.
7. Opinov8
Opinov8 is a technology company headquartered in London. It offers two distinct AI solutions, RAILS and Cipher. RAILS is a platform that helps businesses deploy AI agents in their systems. Cipher, on the other hand, uses AI to help businesses modernise older software, so existing systems are easier to update and stay useful.
- Best for: Companies that are modernising older systems and want to add AI agents to them.
8. Innovify
Innovify is a London-based product development firm that builds AI-native fintech products. For example, it helps businesses add payments, wallets, lending and insurance features to their platforms, with built-in compliance from the first pilot to the full launch.
- Best for: Fintech companies and other financial-services businesses that want to build products using AI.
5 Checks Before You Hire One of the Top AI Development Companies in London
Before you add an AI company in London to your shortlist, ask each company these 5 questions.
1. Ask for proof of a working AI system
First, ask the company to show you an AI system that a client is using today. After all, a demonstration or pilot project is not the same as a finished system being used in a real business. Then, if possible, speak to the client and ask about their experience.
2. Check which technology the company works with
If your business already uses Microsoft Azure or Google Cloud, consider a company that works with the same platform. That way, it may be able to start work faster because it already knows the technology your business uses.
3. Find out how the company protects personal data
To begin with, the company should explain how it collects, uses, stores and protects personal information. Next, ask where it will store your data and who will sign the data processing agreement. Also make sure the company considers UK GDPR requirements from the beginning of the project.
4. Agree on who owns the work
Above all, your contract should clearly state who owns the work created for your project. In particular, this should cover the software code, AI prompts, data pipelines and any AI models trained for your business. Do not leave ownership unclear.
5. Check the costs after launch
Keep in mind that building the AI system is not the only cost. For instance, you may also need to pay for ongoing support, performance monitoring and hosting. Therefore, ask the company to provide these monthly costs in writing before you sign the contract.
If your idea is still loose, reach out to our team for custom AI solutions in London, and we will take it from there.
Company details were checked on each company's website in October 2026.
Frequently Asked Questions
Which AI development company in London is best for small businesses?
It depends on your project. Of the top AI development companies in London listed above, Gravity Base focuses on small and mid-sized businesses. Meanwhile, Datatonic and Transparity suit firms already on Google Cloud or Microsoft, and Faculty suits large organisations.
Do I need an AI company based in London?
Not necessarily. In fact, many London firms work with clients remotely and run their workshops in person or online, so you can hire a firm outside London too if it suits you better.
Instead, look for 3 things when you choose a company:
- Experience with UK GDPR, the UK law that sets rules for how businesses collect, store and use people's personal data.
- Working hours that overlap with yours, so you can talk to the team during your own day.
- Past projects in your sector.
How much do London AI development companies charge?
On average, London AI and ML engineers typically charge £650 to £1,200 a day when hired through agencies. For full details, check our guide to AI development cost in the UK for the detailed price tables.
What is the difference between an AI consultancy and an AI development company?
In short, an AI consultancy helps your business understand where and how AI can create value. An AI development company, by contrast, turns those ideas into reality by designing and building the systems. Our guide on choosing an AI consulting partner explains when you need each.
Which London AI companies work with the public sector?
Of the companies listed above, Faculty works with the public sector. Its case studies include work with the NHS, NESO and Dstl.