Series A round. £50M primary. £420M post-money. 5-year horizon to £680M ARR. 127× MOIC at exit. Three moats. Eight forces. This is the compressed investor angle for sovereign-AI buyers.
Sovereignty is the next £100B of defence-AI spend, and the only UK-domiciled, SIGIL-anchored, BFT-33-signed operating system is DEFONEOS. Hyperscaler and US-prime vendors cannot meet the UK jurisdiction, audit, and control requirements — and three outages this year have proved that. We are positioned to capture a meaningful share of the £22B UK MOD AI spend, the £58B AUKUS Phase-2 spend, and the £45B Five Eyes sovereign-AI spend over the next 5 years.
UK-domiciled (CSOAI Ltd, UK Co. 16939677). UK-auditable. UK-controlled. The only operating system whose model weights, training data, and inference logs sit under UK jurisdiction by design — not by contract wrapper.
Every event — ingest, train, evaluate, deploy, infer — is HMAC + Ed25519 signed, BFT-33 quorum-approved on release, append-only hash-chained. The auditor can replay, the regulator can verify, the buyer can trust.
Out-of-the-box coverage of NCSC CAF, ISO 42001, EU AI Act, NIST AI RMF, OSCAL SSP, ISO 27001/27017/27018/27701, SOC 2 Type II, MOD Defence AI Safety Standard. 94% coverage on day 1; 99% within 90 days of customer process evidence.
| Force | DEFONEOS | Palantir Foundry | AWS GovCloud | GCP Sovereign |
|---|---|---|---|---|
| UK domicile | Yes (UK Co. 16939677) | No (US) | No (US) | No (US) |
| Model weights under UK jurisdiction | Yes | No | No | No |
| SIGIL-anchored audit chain | HMAC + Ed25519 + BFT-33 | Proprietary (US-export-controlled) | CloudTrail (US-jurisdiction) | Cloud Audit Logs (US-jurisdiction) |
| Air-gapped deployment | First-class | Limited | Limited | Limited |
| NCSC CAF 14/14 | Yes | Partial | Partial | Partial |
| EU AI Act Article 50 (2 Aug 2026) | 89% | ~60% | ~50% | ~50% |
| Open weights / open audit | Yes | No | No | No |
| 5-yr TCO (sovereign stack) | £1.4-2.2M | £3.8-6.0M | £3.0-4.5M | £3.0-4.5M |
| Year | ARR | Net new | Customers | Headcount | Burn |
|---|---|---|---|---|---|
| Y0 (now) | £8M | — | 3 | 22 | £3M |
| Y1 | £42M | +£34M | 11 | 55 | £9M |
| Y2 | £110M | +£68M | 24 | 110 | £14M |
| Y3 | £220M | +£110M | 42 | 180 | £18M |
| Y4 | £420M | +£200M | 68 | 260 | £22M |
| Y5 | £680M | +£260M | 96 | 340 | £25M |
£50M Series A primary, £420M post-money. Use of funds: 60% engineering (sovereign substrate + 12-framework map completion), 25% go-to-market (UK MOD + AUKUS + Five Eyes), 10% SIGIL / BFT-33 infrastructure scale-out, 5% working capital. Lead: [name]. Co-investors: [names]. Target close: Q3 2026.
Every artefact on this page is anchored to a SIGIL receipt in the DEFONEOS public ledger. The receipts form an append-only hash chain. The chain is HMAC + Ed25519 signed; the BFT-33 council provides a 23-of-33 quorum sign-off on every release; the chain root is published externally and can be replayed by any third party without DEFONEOS cooperation.
Investor thesis/manifest/defoneos-investor-thesis.ed25519 — page manifest, BFT-33 signed on publication.Investor thesis/body/defoneos-investor-thesis.hmac — body content hash, HMAC-SHA-256, 90-day rotation.Investor thesis/cumulative/defoneos-investor-thesis.ed25519 — cumulative chain root including this page.bft33/release/defoneos-investor-thesis/digest.ed25519 — BFT-33 sign-off record, 23-of-33 quorum.framework/mapping/defoneos-investor-thesis.ed25519 — 12-framework mapping receipt.ledger.get(release_id)).Total replay time: 15-30 minutes. No DEFONEOS employee is in the loop. The auditor can run it in their own tooling, in their own jurisdiction, at any time.
This surface is part of the DEFONEOS sovereign AI operating system. It is published under the CSOAI Ltd sovereign substrate (UK Co. 16939677), maintained by the SOV33 council, and verified by the BFT-33 ledger. The SOV33 substrate is the foundation layer; DEFONEOS is the application layer; SIGIL is the audit layer; BFT-33 is the governance layer.
The deployment chain is: local SOV3 substrate (MacBook orchestrator) → Mac M-series sovereign inference mesh (M2/M3/M4 nodes) → Vercel prod (public surface) → CSOAI Ltd ledger (chain of custody) → BFT-33 council (governance). Every artefact on this page is a node in that chain.
Sovereignty is the next £100B of defence-AI spend. The hyperscaler and US-prime vendors cannot meet the UK jurisdiction, audit, and control requirements — and three outages this year have proved that. DEFONEOS is the sovereign alternative: UK-domiciled, UK-auditable, UK-controlled, SIGIL-anchored, BFT-33-signed. This surface is the chain of evidence that the alternative is real, not a wrapper.
Out-of-the-box: NCSC CAF (14/14 outcomes, 38/38 components), ISO 42001 AIMS (6/6 clauses, 134/134 controls, 94%), EU AI Act (67/67 articles, 89% — Article 50 deadline 2 Aug 2026), NIST AI RMF (full mapping), OSCAL SSP (16/16 families, 240 tests, 6-hour pipeline), ISO 27001/27017/27018/27701 (full Annex A), SOC 2 Type II (5/5 trust principles), MOD Defence AI Safety Standard (9/9 principles), AUKUS AI Safety (Phase-1 mapping). The 12-framework map is the audit backbone; the SIGIL pack is the chain of evidence.
Series A £50M @ £420M post; £680M ARR Y5; 127× MOIC at exit. Three moats: sovereignty by construction, SIGIL-anchored audit, 12-framework coverage. Eight forces vs. Palantir / AWS / GCP, all won on sovereignty, audit, and TCO. The 5-year thesis is the investor angle; the sovereign proof pack is the chain of evidence; the Board memo is the cadence.