UK AI voice agents, built the way UK buyers actually buy them.
Persona gives you a choice most vendors don't. Choose UK-sovereign mode — speech-to-text, language model, text-to-speech and database all inside AWS London, with no US AI company anywhere in the data path. Or choose high-fidelity mode with your pick of OpenAI, Gemini or Claude, plus ElevenLabs voices — the most natural AI voice on the market. Same telephony backbone. Same twenty years behind it.
Sovereign or frontier. One of these is right for you — we'll help you pick honestly.
Most vendors push you toward one answer. We think different UK buyers have genuinely different needs. Some need every byte to stay in the UK. Some want the raw capability of OpenAI, Gemini or Claude. Persona does both — and we'll tell you straight which one fits.
Persona UK · Every component in UK Datacentres
Speech-to-text, LLM, text-to-speech and database — all UK-hosted. GDPR compliant by architecture.
- Data never leaves the UK — STT, LLM, TTS and database all in AWS eu-west-2
- LLM run by Hostcomm — not controlled or managed by a US AI company
- Your call data is never used to train anyone's models
- No risk of models being withdrawn or deprecated on a vendor's whim
- Very low latency — sub-800ms, no Atlantic crossings
- Your choice of UK-hosted TTS and STT engines
- Fully functional — tools, webhooks and API integration, nothing cut down
Persona Premium · OpenAI, Gemini or Claude + ElevenLabs
Your pick of the frontier LLMs, with the most natural AI voice available today. For buyers who prioritise caller experience.
- Choice of frontier LLMs — OpenAI GPT, Google Gemini or Anthropic Claude
- ElevenLabs text-to-speech — indistinguishable from a human
- Optional PII redaction before upload for risk reduction
- Same Hostcomm telephony backbone and contact centre integration
- Data processed outside the UK — GDPR via contractual safeguards, not architecture
What is a UK sovereign AI voice agent?
A UK sovereign AI voice agent is a voice AI system where every processing component — speech-to-text, the language model, text-to-speech and the database — runs on UK infrastructure under UK jurisdiction, with no US AI provider in the data path. Persona UK is Hostcomm's sovereign deployment: the full pipeline hosted in AWS London (eu-west-2), operated by a UK company with twenty years of contact centre telephony behind it.
Data never leaves the UK
Audio, transcripts, embeddings and stored records all remain in AWS eu-west-2. No international transfers to assess — your DPIA and ICO conversations get simpler, not harder.
Not controlled by a US AI company
The language model is open-weights, deployed and managed by Hostcomm. No OpenAI, Google or Anthropic in the loop — and no foreign legal regime with a claim on your call data.
Never used for training
Your recordings and transcripts are never used to train AI models — ours or anyone else's. That's an architectural fact, not a clause you have to negotiate.
No model withdrawal risk
US providers deprecate models on their own schedule. Persona UK runs model versions we pin and operate — nothing disappears on a vendor's whim, and upgrades happen when you choose.
Very low latency
Every hop happens inside one London region — no Atlantic round-trips. Sub-800ms end-to-end response keeps conversations feeling natural on a real phone line.
Your choice of engines. Full integration.
Pick from multiple UK-hosted TTS and STT engines. Tools, webhooks, CRM and API integration all work exactly as they do in Premium — sovereignty costs you nothing in capability.
Not a chatbot with a microphone. A real contact centre voice platform.
Built on twenty years of telephony engineering. Real SIP integration, real human handoff, real memory across calls.
Every part of the voice pipeline, inside AWS London.
When procurement asks where voice data is processed, most vendors give you a corporate headquarters address. That's not the same as data residency — and the ICO knows the difference.
- Speech recognition on UK-hosted models inside your VPC
- Open-weights language model in AWS eu-west-2 — no external API calls
- Neural voice synthesis on UK-hosted infrastructure
- Your DPIA becomes simpler, not harder
Persona remembers your callers. Even months later.
Most voice agents treat every call as the first. Persona uses a knowledge graph to remember customer preferences, past complaints, account details and conversation outcomes — so your voice agent picks up exactly where the last call left off.
- CallerID and email recognition — no IVR menus, no account numbers
- Full call history retrieved in under 50ms
- Real-time business data via webhooks — CRM, housing, billing
- PII redaction before anything hits the LLM
Warm-transfer to real agents, with full context.
Not every call should end with the AI. When Persona detects complexity, escalation is instant — and the human agent receives a transcript and summary before they even say hello.
- Transfer to internal SIP extensions or external numbers
- WebRTC client for voice, video and chat — no app download
- Direct BT Wholesale interconnect for carrier-grade call quality
- Autonomy dial: set AI independence per channel
Take card payments mid-call. Without pulling PII into the LLM.
Hostcomm is a PCI DSS Level 1 service provider for the fifth year running. Persona can take a payment mid-conversation by handing off to a secure payment IVR — the card number never enters the language model.
- Pre-integrated with Stripe, Sage Pay, Barclays and Adyen
- DTMF card entry for the PCI-sensitive moment
- Persona resumes the conversation afterward with full context
- PCI discipline applied across the whole Hostcomm network
Persona vs every AI voice agent shortlisted by UK buyers.
We compared Persona UK against the platforms most often evaluated against us. No vendor on this list matches UK-only data residency committed at the architecture level.
| Capability | Persona UKHostcomm · UK | RetellUS | VapiUS | AircallFR / US | Connex OneUK |
|---|---|---|---|---|---|
| Speech-to-text hosted in UK | ✓ | ✕ | ✕ | unstated | unstated |
| Language model hosted in UK | ✓ | ✕ | ✕ | unstated | unstated |
| Text-to-speech hosted in UK | ✓ | ✕ | ✕ | unstated | unstated |
| AWS region disclosed | eu-west-2 | — | — | — | — |
| No US sub-processors | ✓ | ✕ | ✕ | ✕ | — |
| Call data excluded from model training | ✓ | unstated | unstated | unstated | unstated |
| UK GDPR by architecture | ✓ | ✕ | ✕ | unclear | unclear |
| PCI DSS Level 1 | ✓ | — | — | ✓ | — |
| G-Cloud 14 listed | ✓ | ✕ | ✕ | ✕ | — |
| Direct BT Wholesale interconnect | ✓ | ✕ | ✕ | ✕ | — |
| 20+ years telephony heritage | ✓ | ✕ | ✕ | ✕ | ✕ |
Sourced from public documentation and vendor trust pages as of 2026. "Unstated" means the vendor does not explicitly commit to UK-only processing. We update this table when vendors publish clearer commitments.
Built for UK sectors with real constraints.
For these buyers, UK hosting isn't a marketing line — it's a hard procurement requirement.
Patient data that legally cannot leave the UK.
Appointment booking, prescription enquiries, out-of-hours triage. Persona UK keeps every word inside the UK boundary — simplifying your DPIA.
FCA Consumer Duty, evidenced automatically.
Persona records, transcribes, and analyses 100% of regulated calls without exporting them to the US. Built-in sentiment and vulnerability detection.
Sovereign by architecture, not just by promise.
Council tax, housing repairs, parking, benefits enquiries. Meets data residency without exception processes. Procurable through G-Cloud.
Repairs reporting at 3am, without a callback queue.
Inbound voice agents triage repairs, log to your housing system via webhook, and warm-transfer emergencies. Same agent runs outbound rent reminders.
Natural voice that lifts CSAT during peak trading.
For brands where caller experience drives loyalty, Persona Premium with ElevenLabs voices handles order enquiries, returns, and delivery updates in a way customers genuinely enjoy.
Demand spikes, handled without hiring.
Storm calls, meter reads, smart-meter onboarding. Persona scales from one concurrent call to thousands within the same UK region. No cold starts.
Answers that hold up in an IG review.
These are the questions we hear in every DPIA meeting and every procurement call. The answers are the same every time.
What is a UK sovereign AI voice agent?
Which mode should I choose — UK-sovereign or high-fidelity?
Which language models does Persona use?
Where is Persona's voice data processed?
Is my call data used to train AI models?
What happens if an AI model is withdrawn or deprecated?
Is Persona UK GDPR compliant?
How does Hostcomm compare to Retell, Vapi, or Aircall?
Can I procure Persona through G-Cloud or CCS?
How quickly can Persona be deployed?
Is Persona suitable for outbound as well as inbound?
Twenty minutes. One demo. Both modes on the line.
Bring your toughest information governance question. We'll show you the architecture for both modes, hand over the DPA, and put a live agent on a real phone number — all in the same call.
What they say about Hostcomm
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