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AI Agent Development · United Kingdom

AI agent development for UK teams that ship.

Aiinfox builds production AI agents for UK organisations — multi-step, tool-calling, audit-logged. UK GDPR, ICO, Data Protection Act 2018 aligned, FCA-aware for regulated fintech. Senior engineers, fixed-price six-week scopes, strong UK-hours overlap from our Mohali HQ.

50+

AI systems shipped to production

12

industries served end-to-end

<2s

average voice-agent p95 latency

99.95%

production uptime across deployments

Overview

Multi-step AI agents for the United Kingdom — predictable, audit-grade, deployable inside your cloud.

Most of the AI agent work UK organisations actually ship is not autonomy theatre. It is a bounded multi-step workflow embedded inside an existing SaaS product, an FCA-supervised platform, or an internal operations tool — with typed tool calls into your real systems, a refusal layer when context is missing, and audit logs on every model and tool call that an ICO inspector or a senior manager under SM&CR could read in court. That is the work we ship for UK clients. Aiinfox has shipped 50+ production AI systems across 12 industries; the agentic builds in that portfolio include a customer-support deflection agent at 68% L1 resolution on a 2M-subscriber telco, an outbound voice agent saving 1,400 staff-hours a month on a regulated European insurance workflow, and a citation-grounded research agent at 98.4% citation accuracy in a regulated reference build.

The buyers we typically work with — CTOs at Series A and B London SaaS scale-ups, Heads of Engineering at FCA-supervised fintechs and digital lenders, product directors at UK healthtech and govtech operators — share a common starting point. They have already commissioned an AI agent proof-of-concept from a London consultancy that demoed cleanly in a sandbox and fell apart on the first slice of real production traffic. We exist for the build that follows: the eval harness that gates every prompt change, the deterministic tool schemas, the bounded recursion that prevents the agent from running away on a customer's behalf, and the observability stack that makes the agent debuggable at 2am. We pin LLM inference to a UK or EU region when your DPO requires it, run the entire build inside your AWS London or Azure UK South account when your security team prefers to own the runtime, and self-host Llama 3 on vLLM inside your VPC for clients with strict data-egress policies.

Time-zone overlap with the UK is the strongest in our portfolio. Indian Standard Time is GMT+5:30, which gives roughly four to five hours of native daily overlap with UK business hours — our 1:30pm IST is your 8am GMT, our 6:30pm IST is your 1pm GMT. Daily standups, twice-weekly demos, and ad-hoc problem-solving sessions all land inside UK business hours with no late-night calls on either side. Six-week target from kickoff to a working v1, fixed-price scope written in 72 hours, overrun cost on us if we miss for reasons on our side. UK GDPR-aligned DPAs are signed before any personal data is processed, and DPIAs are run for any agent processing personal data at scale. Cost versus a London AI consultancy lands roughly 30 to 50 percent lower on senior rates — but the headline is the engineer on your kickoff call writes your code.

Why teams pick Aiinfox

  • UK GDPR + Data Protection Act 2018 + ICO-aligned audit logs
  • FCA-aware agent design for SM&CR accountability
  • AWS London / Azure UK South / GCP europe-west2 deployment
  • Self-hosted Llama 3 on vLLM inside your VPC supported
  • 5-hour daily overlap with UK business hours (IST is GMT+5:30)
  • Senior engineers only — 8+ years average, no junior pool
About the team
What we build

Production work, not prototypes.

Customer-support agents

Multi-channel agents (web, SMS, voice, WhatsApp) with tool calls into your billing, CRM, and ticketing. PII redaction at ingress, audit log per turn, clean escalation to a human the moment confidence drops. 68% L1 deflection sustained on a 2M-subscriber telco reference build.

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Internal-ops agents

Agents embedded inside your internal tools — back-office, claims, KYC review, document approval. Deterministic tool schemas, bounded recursion, role-scoped permissions, and a full audit trail for every action taken on a customer's behalf.

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FCA-aware fintech agents

KYC automation, fraud signal extraction, deterministic compliance copilots, and audit-trailed claim handling for FCA-supervised fintechs, neobanks, and digital lenders. Humans approve everything that touches a regulated outcome.

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RAG-grounded research agents

Multi-step research agents over your private corpus with required citations and a refusal layer when context is missing. 98.4% citation accuracy in a regulated reference deployment.

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Voice agents (UK English)

Sub-second STT-to-TTS pipelines on Twilio, LiveKit, or Deepgram with British English voices. CRM write-back to HubSpot, Salesforce, or your bespoke stack. 1,400 staff-hours saved per month on a European insurance reference build.

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Agent takeovers & audits

Audit of a stalled agent build from a London consultancy — code, prompts, eval results (if any exist), and cost telemetry. Smallest valuable change first to prove we understand the system, then incremental stabilisation or a parallel rebuild.

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Industries

Where this work has shipped.

Fintech & digital lending

KYC automation, fraud detection, and deterministic compliance copilots — for FCA-supervised UK fintechs, neobanks, and digital lenders under SM&CR with full per-action audit trails.

SaaS & B2B platforms

In-product agents and copilots embedded inside existing London and Manchester SaaS scale-ups targeting UK and EU enterprise. Streaming UIs, tool calls into your APIs, eval-gated releases.

Insurance & risk

Outbound voice agents for policy renewals and claims follow-ups. 1,400 staff-hours saved per month on a European insurance reference build at sub-1-second p95 latency.

Telco & media

Customer-support deflection agents at telco scale — 68% L1 resolution sustained on a 2M-subscriber reference build with audit logs on every conversation.

Legal & professional services

Citation-grounded research agents and contract intelligence — for UK law firms and Magic Circle-adjacent corporate legal teams that need grounded answers, not generative guesses.

Healthcare & NHS-adjacent

Clinical workflow agents, ambient scribing, and medical inquiry RAG. UK GDPR and Caldicott-aware data handling; UK-region inference; audit logs on every PHI touchpoint.

Retail & e-commerce

Shopify-native shopping agents wired into inventory, pricing rules, and your CRM. Voice ordering, returns handling, and personalised merchandising — not a generic chatbot wrapper.

Govtech & public sector

Citizen-facing agents, document intelligence, and policy-grounded answers. Deployable inside customer-controlled UK cloud with full audit trails for FOI and ICO inspection.

Process

How we ship.

01

Discover

30-minute scoping call in UK business hours. Agent intent, system surface area, tool schemas, UK GDPR scope, success metric. Mutual NDA before any technical detail is shared.

02

Scope

Fixed-price one-pager in 72 hours: agent boundaries, tool schemas, acceptance criteria, six-week timeline, GBP or USD price. DPA signed before any personal data is processed.

03

Build

Senior engineers, twice-weekly Zoom demos in UK business hours, real production code from day one. Eval harness, refusal layer, audit logs, observability wired in week one.

04

Ship & operate

Launch with real users. Hand over runbooks and the audit-log dashboard. 30-day production warranty. Optional retainer for tuning and on-call response in UK hours.

Proof

Production agents for regulated UK workloads. Audit-grade.

68% L1 deflection sustained on a 2M-subscriber telco SMS agent. 1,400 staff-hours saved per month on a European insurance outbound voice agent at sub-1-second p95 latency. 98.4% citation accuracy on a regulated research agent with zero policy-violating answers in 90 days of production. Documented builds, not adjectives.

FAQ

Questions teams actually ask.

How does the time-zone overlap work for UK clients building AI agents?

Strong. India Standard Time is GMT+5:30, which gives roughly four to five hours of native daily overlap with UK business hours — our 1:30pm IST is your 8am GMT, and our 6:30pm IST is your 1pm GMT. Daily standups, twice-weekly demos of the agent in action, and most ad-hoc debugging land inside that window without late-night calls on either side. For UK clients who prefer afternoon-onwards working, we can extend coverage to 8pm IST (2:30pm GMT) on a planned cadence. Written async updates go out daily before your standup with eval-run results and any agent regressions caught overnight.

Is the agent UK GDPR and ICO aligned?

Yes. Engagement defaults align with UK GDPR, the Data Protection Act 2018, and ICO published guidance on AI and automated decision-making. Every model and tool call the agent makes is audit-logged with input, output, prompt version, tool schema version, and the operator or end-user identity — exportable for ICO inspection. A Data Protection Impact Assessment (DPIA) is run for any agent processing personal data at scale or making decisions that produce legal or similarly significant effects on a data subject. Refusal copy and a human handoff path are scoped before launch, not after.

Does Aiinfox sign UK-specific DPAs and SCCs?

Yes. We sign UK GDPR-aligned Data Processing Agreements covering the Article 28 processor obligations: processing only on documented instructions, confidentiality of personnel, security of processing, sub-processor management, data subject rights assistance, breach notification, and deletion or return of personal data at the end of the engagement. International transfers of personal data are covered by the UK International Data Transfer Agreement (IDTA) or the EU Standard Contractual Clauses with the UK addendum, as your DPO prefers. We will work from your DPA template or provide ours.

Can the agent run inside our AWS London or Azure UK South account?

Yes — that is the most common UK deployment pattern we run. We work inside your AWS, Azure, or GCP account in any UK or EU region you specify, using your IAM, your VPC, and your customer-managed encryption keys. For LLM inference, we route to UK or EU endpoints on Claude (Anthropic) and GPT-4o (Microsoft Azure OpenAI Service in UK South), or we self-host Llama 3 on vLLM inside your VPC if your team requires zero third-party inference. The agent's tool calls stay inside your network. No data leaves your cloud unless your runbook says it should.

Do you work under an MSA plus per-project SOWs, or one-off SOWs?

Either. Most repeat UK clients move to a Master Services Agreement after the first engagement so subsequent agent builds, evals work, and on-call retainers ship under a per-project Statement of Work without renegotiating the umbrella terms. For a first engagement, a standalone SOW with the DPA appended is the standard pattern. We will work from your legal team's MSA template or provide ours; legal turnaround is usually one to two weeks depending on your DPO's review cadence.

How are you experienced with FCA-supervised UK fintech agent work?

We have shipped KYC automation agents, fraud signal extraction, deterministic-output compliance copilots, and audit-trailed claim-handling agents for fintech and insurtech operators in the UK and EU. We treat FCA Senior Managers and Certification Regime (SM&CR) accountability seriously — every model and tool call is audit-logged with input, output, prompt version, and operator identity, so the senior manager accountable for the system has the evidence to defend it. The agent does not make autonomous regulatory decisions; humans approve everything that touches a regulated outcome.

How does cost compare to a London AI consultancy?

Most v1 agent engagements at Aiinfox land between £20,000 and £100,000 fixed-price for a focused build — a customer-support agent, an internal-ops agent, a voice pipeline, or an FCA-aware compliance copilot. Larger multi-quarter engagements with custom evals, fine-tuning, and integration into a regulated platform typically reach £150,000 to £250,000. The cost difference versus a London AI consultancy lands roughly 30 to 50 percent lower on senior rates — but the headline is that the engineer on your kickoff call writes your code, not that you are paying City rates for a partner who routes the work to a junior pool.

Can you take over a stalled AI agent build from a London consultancy?

Yes — takeover audits are routine. Step one is reading the code, the prompts, the tool schemas, the eval results (if any exist), and the cost telemetry. Step two is shipping the smallest valuable change — usually an eval harness or an audit-log layer — to prove we understand the system. Step three is the longer-term plan: incremental stabilisation, a parallel rebuild, or shutting it down and starting over. Most takeovers we see did not need a full rewrite; they needed evals, refusal layers, observability, and a senior engineer on the build. We will be honest on the first call.

Let's build it

Ready to build an AI agent that holds up in UK production?

30-minute discovery call inside UK business hours. No pitch deck. Fixed-price six-week scope in 72 hours. UK GDPR-aligned, DPA-ready, deployable inside your UK cloud with audit logs on every turn.

Book a discovery call

Reply within 1 business day · India & USA

Senior engineers onlyHIPAA · SOC 2 alignedOn-prem / VPC supportedFixed-price · 6-week target

Aiinfox is also referenced as an AI agent development company in the United Kingdom, hire AI agent developers London, multi-step agent developers UK, FCA-aware AI vendor, ICO-aligned AI consultancy, and a top AI development company in India delivering to UK clients. Explore the parent practice in AI agent development, the country pillar AI development company UK, and adjacent practices including RAG development services, generative AI, and fintech AI development. Documented proof: medical inquiry RAG case study and the insurance voice agent case study.