Southampton · London · UK-wide
AI agent development company in the UK
Coheser is led from Southampton, UK, with a senior engineering centre in Lahore. We design and build custom AI agents, automations and software for founders and teams across the UK — agents that plug into your CRM, your phone lines and your data, and finish real work end to end.
Most AI projects stall between the demo and the real world. We close that gap: senior engineers only, a working prototype on your own data before you commit, and code you own from day one.
150+ projects delivered. 50+ AI agents built. 98% client satisfaction.
What we build for UK clients
Custom AI agents
Agents for sales, support and operations: lead qualification and follow-up, enquiry handling, inbox triage, quote drafting, invoice chasing, document and research workflows — with human approval where a decision matters.
AI voice & calling agents
Voice agents that answer calls, qualify leads and book appointments out of hours, connected to your calendar and CRM — so enquiries at 9pm get the same response as enquiries at 9am.
AI automation
Back-office automation across the tools you already run — form-to-CRM pipelines, reporting, review requests, n8n and custom integrations.
Generative AI & RAG
Chat with your own data: RAG pipelines over your documents, policies and product information, with access controls your team can trust.
WhatsApp & website agents
Agents on the channels your customers actually use, taking orders, bookings and questions without adding headcount.
Built for UK businesses
- A UK-led team — your calls, contracts and project leadership run from Southampton, in UK hours, with senior engineers in Lahore doing the building.
- GDPR-aware by design — data handling, access controls and hosting choices designed around UK GDPR from the first sketch.
- The sectors we know: professional services, estate agents & property, clinics & healthcare, finance, retail & e-commerce, logistics, hospitality.
- Fixed-scope, in writing — after a free discovery call you get a fixed scope with milestones and a prototype, so the price you agree is the price you pay.
How we work
1. Discovery call (Week 0) — 30 minutes, no slides. We find where time and money leak today.
2. Scope & prototype (Weeks 1–2) — fixed scope plus a working demo on your own data.
3. Build in the open (Weeks 2–8) — weekly demos, shared board, staging link.
4. Launch & look after (ongoing) — we tune from real conversations and stay on for support. Most projects go from first call to launch in six to ten weeks.
Frequently asked questions
How much does AI agent development cost in the UK?
It depends on the workflow: a single-purpose support agent is a much smaller build than a multi-agent system wired into your CRM, telephony and data. We quote a fixed scope after a free discovery call — the number we agree is the number you pay.
How is this different from a chatbot?
A chatbot answers questions. An agent completes tasks — it uses your tools, follows your rules, books the appointment, updates the CRM and only asks a human when it should.
Is our data safe?
We design around UK GDPR: defined data flows, access controls, and hosting in the region your compliance needs. You own the data, the code and the accounts.
Do you rescue failed AI projects?
Yes — a common starting point is an agent or automation that demoed well and failed in production. We audit what exists, keep what works, and rebuild what does not.
Let’s talk
Planning a project in the UK?
Tell us what you want to build. You’ll get honest advice, a fixed quote and a timeline — within a few days.