What does an AI agent development company do?

It designs and builds software that carries out a defined piece of work across your systems, such as matching transactions or drafting replies, and hands a person the exceptions. The engineering is mostly in the access, the checks and the audit trail around the model.

How much does it cost to build a custom AI agent?

It depends on the workflow and the systems involved. A few firms on this list publish starting prices on their own sites; most, including New Odyssey, quote after scoping one process.

No. The firms are listed alphabetically, with New Odyssey last because we wrote the page. Every fact about another firm comes from that firm's own website.

AI agents

AI Agent Development Companies in the UK: 8 Firms Compared

Last updated November 13, 2026

The short answer

Companies that build custom AI agents for businesses in the UK include Critical Future, Flowio, Magora, Makeitfuture, Robiquity, Roboyo and Softwire and New Odyssey. They range from automation agencies working on low-code platforms to engineering consultancies building agents into core systems. This page compares them using facts from each firm's own website, checked on November 13, 2026. It is written by New Odyssey, one of the firms listed, so it is a comparison and not a ranking.

The companies compared

Facts below come from each firm's own website, checked on November 13, 2026. Firms are in alphabetical order. New Odyssey wrote this page and is the last row.

Firm	Based	What it offers	Who it is for	Worth knowing
Critical Future	London, United Kingdom	Describes work ranging from AI strategy and return quantification to building custom agent systems, deploying autonomous workflows and running managed AI services.	Not stated on its site	Says it has completed 1,000+ projects.
Flowio	Glasgow, Scotland (48 West George Street); registered in Scotland	Builds workflows on n8n and Python, plus AI phone and chat agents and CRM integrations.	UK businesses in trades and home services, property, construction and engineering, and marketing agencies; other sectors are named in its FAQ.	States it is an OpenAI Select Partner and an n8n Certified Expert; publishes package pricing from £750 for a single workflow.
Magora	London (The Tea Building, 56 Shoreditch High Street); legal entity Thinking Fish Ltd; also lists a US presence in Florida	Markets AI agent development inside a client's CRM or ERP, retrieval-based document search, and LLM applications with UK or EU hosting options.	Founders, product leaders and enterprise teams across sectors including fintech, healthcare, real estate, logistics and e-commerce.	Says it has traded since 2010 and shipped 500+ digital products; publishes starting prices (AI agent development from £20,000).
Makeitfuture	UK registered office in Helston, Cornwall and a London office (167-169 Great Portland Street); also Paris and Cluj-Napoca	Markets named agents (for example quotation, pricing and sales development agents), AI voice assistants and custom AI development, built on platforms such as Make, n8n, Airtable and Zapier.	Segments named are e-commerce, marketing, sales, finance and accounting, HR and operations, and enterprise.	Says it has built 15,000+ AI automations for 700+ clients; lists Make Platinum partner status.
Robiquity	Manchester (Level 8, Transmission, Atherton Street)	Markets agentic AI, unstructured data processing, end-to-end case management and self-service channels, delivered through service design, build and a managed operate service.	Not stated on its site	Its site announced on 10 November 2026 that Avanade has agreed to acquire it, subject to closing conditions; case studies name Evri, NHS Scotland, the Ministry of Justice and Durham Police.
Roboyo	Footer names Roboyo Group Limited and its ISO 27001 line lists Birmingham, Nuremberg and Barcelona	Markets agentic automation offerings including an agentic application launchpad, data and knowledge foundations for agents, and an AgentOps run service.	Enterprise organizations moving from AI pilots to production; industries listed include automotive, banking, government, healthcare, insurance, manufacturing and retail.	Says it has delivered 500+ AI and agentic automation projects; lists UiPath Diamond Partner and Claude Partner Network Select Tier statuses.global now redirects to roboyo.ai.
Softwire	Offices listed in London, Manchester, Cambridge and Abu Dhabi	Lists agentic AI automation within its AI Transformation service, alongside AI strategy, proof-of-value work and AI solutions at scale.	Company size not stated; sectors listed are energy and utilities, financial services, government and public sector, and insurance.	Publishes a case study with Tax Systems on AI automation of tax compliance processes.
New Odyssey (the author of this page)	London, with US operations in Dallas, Texas	Builds custom AI agents that do a defined job inside a company's existing systems, with approval points and an audit trail, and sells Pegasus, agents already packaged for common operations workflows.	Mid-market operations, finance, HR, legal and compliance teams in the UK and US	Built the AI help desk the Talking News Federation runs in production. Starts with a fixed fee for one process.

How to choose

Give the agent a defined job. A firm should be able to say what the agent does, which systems it touches and when it hands over to a person.
Ask what it is built on. An agent on a low-code platform is quicker to start; one built into your own systems is easier to control and audit.
Ask to see the audit trail for one decision, and where a person approves.
Test on your own cases, not a demo. Agree the measure before the build starts.
Ask who runs it afterwards and what that costs.

Where New Odyssey fits

New Odyssey builds agents for back-office operations work: a defined job, scoped access to the systems you already run, approval points and a log of every action. For common workflows we have packaged Pegasus agents; for a workflow of your own we build a custom agent. We are not the right choice for a consumer chatbot or a voice agent, which several firms above specialize in.

Frequently Asked Questions

What does an AI agent development company do?: It designs and builds software that carries out a defined piece of work across your systems, such as matching transactions or drafting replies, and hands a person the exceptions. The engineering is mostly in the access, the checks and the audit trail around the model.
How much does it cost to build a custom AI agent?: It depends on the workflow and the systems involved. A few firms on this list publish starting prices on their own sites; most, including New Odyssey, quote after scoping one process.
Is this a ranking?: No. The firms are listed alphabetically, with New Odyssey last because we wrote the page. Every fact about another firm comes from that firm's own website.

Sources

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