By Micky Irons, founder and CEO of Mickai.
A council knows things about a resident that almost no one else does. Where they live and whether they are behind on rent. Which children are on a safeguarding plan. Who receives care in the morning and who is at risk of losing their home by winter. This is the most intimate data the state holds, and residents did not consent to it being copied into a distant data centre so that a chatbot could help a caseworker draft a letter.
That tension has kept useful artificial intelligence out of most town halls. Officers see the potential in triaging housing applications, summarising social care case notes and answering residents faster. Their information governance leads see a one-way door: once citizen data crosses the boundary of the building, no one can prove where it went or unpick where it landed. We built Mickai, our Sovereign Intelligence Operating System, so councils never have to choose between the two.
Eunomia and the meaning of good order
In Greek myth Eunomia was the spirit of good civic order, the daughter who kept a city lawful not by punishing wrongdoing after the fact but by arranging the city so that lawful conduct was the natural path. She is the right figure for local government artificial intelligence, because the failures councils fear are rarely the result of bad intentions. They are the result of arrangements that quietly permit the wrong thing: a spreadsheet emailed to the wrong list, a supplier tool that logs case notes offshore, a well-meaning officer pasting a benefits record into a public assistant.
Good order enforced by architecture means the wrong thing simply cannot happen, whoever is at the keyboard and whatever the deadline pressure. A policy that lives only in a document is a hope. A boundary built into the substrate is a fact. Mickai is designed around that distinction, so that the safe path and the easy path are the same path.
Like Hestia guarding the hearth, the council keeps its most intimate records where they belong, inside its own walls
The data never leaves the building
Mickai runs on hardware the council owns. It can sit air-gapped in a server room or on-premise inside the authority's own network, with zero data egress. The subsystems that read a housing file or summarise a care assessment run locally against that file. Nothing is uploaded to train a foreign model, nothing is retained in someone else's logs, and no residency question is left to a supplier's terms of service. The record that describes a vulnerable resident stays exactly where the citizen expects it to stay: inside the council.
This is not a smaller cloud offering. It is a different layer entirely. The public cloud providers, OpenAI, Microsoft, Amazon Web Services, Google and Oracle, are allies who do superb work at internet scale. Mickai serves the regulated boundary that public cloud cannot cross on the customer's own terms, the boundary where a duty of care and a statutory retention rule make egress a legal problem rather than a technical convenience.
Every action signed before it runs
The heart of the design is the Operation Attestation Record, or OAR. Before any subsystem acts, before a benefits letter is drafted, a case note is summarised or a record is read, Mickai produces a signed attestation that says what is about to happen, which brain is doing it, on whose authority and against which data. The action does not proceed until that record exists. Nothing runs unsigned.
Themis holds the scales that never tip in secret, the signed record that every action must satisfy before it runs
Those attestations are hash-linked into a tamper-evident chain using SHA-3-512, so the audit trail cannot be quietly rewritten after the fact. Each record is signed with post-quantum cryptography, the FIPS 204 ML-DSA-65 standard, which means the ledger will still be verifiable long after today's encryption is obsolete. For a council that may need to defend a decision at an ombudsman inquiry or a judicial review years later, this is the difference between a plausible account and a provable one.
Order that survives an audit
Public bodies are audited, challenged and inspected in ways private firms are not. A resident can ask, under the General Data Protection Regulation, exactly how a decision about them was reached and what data touched it. The Local Government and Social Care Ombudsman can demand the same. Mickai answers that question by design, because the signed ledger records every read and every action offline and independently of the officers involved.
The audit ledger is verifiable without calling home to any vendor. An inspector can confirm the chain's integrity on the council's own hardware, in a locked room, with the network unplugged. High-stakes actions, releasing personal data, altering a live case, running an automated decision that affects entitlements, can be gated behind multi-brain approval and voice-biometric confirmation, so no single account and no single compromised credential can move sensitive information alone.
Mnemosyne, memory herself, keeps the chain of record unbroken so no account can be quietly rewritten
Brains you can revoke
A council's needs change over time, and so must its tools. Mickai's capabilities are delivered as brains and studios, discrete subsystems that can be added for a service and removed when a pilot ends or a supplier relationship changes. Crucially, every brain is revocable. If a capability is retired, its authority is withdrawn cleanly and the fact of its withdrawal is itself recorded in the ledger. When a council can prove not only what a system did but that a capability was switched off on a given date and could not have acted afterwards, it can answer the hardest question an inspector asks: not what did it do, but what could it possibly have done.
Built for the rules councils already live under
Local authorities operate inside a thick web of obligation. The General Data Protection Regulation governs every citizen record. The forthcoming European Union Artificial Intelligence Act, and the direction of United Kingdom policy alongside it, treats decisions about public services and vulnerable people as high-risk uses that demand documentation, human oversight and traceability. Emerging assurance standards such as ISO 42001 for artificial intelligence management systems and the NIST AI Risk Management Framework expect exactly the kind of evidence Mickai generates as a matter of course.
Hecate at the threshold holds the keys that can be granted and withdrawn, the revocable authority every brain must earn
The capabilities behind all of this are protected by 104 filed United Kingdom patent applications, covering about 2,340 claims and owned by Mickai LTD. We frame those filings by what they contain: the attestation record that signs an action before it executes, the post-quantum signed and hash-linked ledger, the offline verification, the revocable multi-brain approvals. This is the machinery of civic order, described in the language of intellectual property because it is genuinely new work.
The bottom line
Councils do not need to send a single resident's record into the cloud to get the benefit of artificial intelligence. With Mickai the data stays inside the building, every action is signed before it runs, and the audit trail can be verified offline years later. Good civic order stops being a promise on a governance page and becomes a property of the system itself. That is the point of sovereign artificial intelligence for local government: the safe thing and the easy thing are finally the same thing, and Eunomia would recognise the arrangement.
Written by Micky Irons. Originally published at https://mickai.co.uk/articles/sovereign-ai-for-local-government. More from Micky Irons and Mickai at mickai.co.uk.
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