11 UK fiscal entry points · 8 fiscal priorities · 6 DEFONEOS MCPs · HM Treasury / OBR / DMO backbone
UK fiscal policy and public expenditure is governed by the Exchequer and Audit Departments Act 1866, the National Loans Act 1968, the Government Resources and Accounts Act 2000, the Budget Responsibility and National Audit Act 2011, the Public Finance Initiative frameworks, the Supply and Appropriation Acts (annual), the Finance Acts (annual), the Fiscal Framework (2016 Brexit agreement), and the 2025 Charter for Budget Responsibility. HM Treasury manages total managed expenditure of approximately £1,270bn (2025-26), sets fiscal rules (debt falling as % of GDP, borrowing under 3% of GDP), oversees Whole of Government Accounts, employs ~4,500 staff, produces the annual Budget and Spring/ Autumn Statements, coordinates spending reviews (SR) allocating departmental expenditure limits (DELs) and annually managed expenditure (AME), manages the gilt market (£2.6tn outstanding), and approves all major public sector commercial decisions. The Office for Budget Responsibility (OBR) provides independent economic forecasts, the Debt Management Office (DMO) manages gilt issuance, the National Audit Office (NAO) audits public spending, and the Infrastructure and Projects Authority (IPA) oversees major projects. DEFONEOS delivers the UK's first open-source Sovereign Public Services OS purpose-built for treasury & fiscal policy — sovereign fiscal provenance, BFT-governed expenditure audit, public finance transparency, and AI-augmented fiscal analysis.
All entries are BFT-signed (Ed25519 / RFC 8032 / 2026-Q3 rotation) and curl-verifiable. Per-entry contacts sourced from HM Treasury + OBR + DMO + NAO + PSN (2026-Q1).
| # | Entry point | Location | Function | DEFONEOS fit |
|---|---|---|---|---|
| E1 | HM Treasury — Public Spending Group | London | Spending Review · DEL/AME allocation · departmental budgets | DEFONEOS MCPs: data-gov-uk-mcp · bft-council-probe — spending allocation + BFT |
| E2 | HM Treasury — Financial Services Group | London | Financial regulation · City competitiveness · fintech | DEFONEOS MCPs: companies-house-mcp · bft-council-probe — FS policy + BFT |
| E3 | Office for Budget Responsibility (OBR) | London | Independent fiscal forecasts · EFO · Charter compliance | DEFONEOS MCPs: ons-statistics-mcp · data-gov-uk-mcp — forecast data + provenance |
| E4 | UK Debt Management Office (DMO) | London | Gilt issuance · Treasury bill management · remit | DEFONEOS MCPs: sovereign-keystore · data-gov-uk-mcp — gilt provenance + chain |
| E5 | National Audit Office (NAO) | London | Audit of public spending · VfM studies · Whole of Government Accounts | DEFONEOS MCPs: bft-council-probe · sovereign-keystore — audit evidence + BFT |
| E6 | Infrastructure and Projects Authority (IPA) | London | Major projects oversight · GMPP · AIPA rating | DEFONEOS MCPs: data-gov-uk-mcp · bft-council-probe — project data + BFT |
| E7 | HM Treasury — Enterprise Strategy Group | London | Strategic fiscal direction · OBR liaison · green gilt | DEFONEOS MCPs: data-gov-uk-mcp · sovereign-keystore — fiscal strategy + chain |
| E8 | Government Actuary's Department (GAD) | London | Pension valuations · insurance · social security modelling | DEFONEOS MCPs: ons-statistics-mcp · sovereign-keystore — actuarial data + chain |
| E9 | HM Treasury — Public Services Group | London | Public service pay · pensions · workforce strategy | DEFONEOS MCPs: data-gov-uk-mcp · ons-statistics-mcp — pay data + provenance |
| E10 | Crown Commercial Service — Treasury | London / Norwich | Government procurement · CCS frameworks · spend controls | DEFONEOS MCPs: companies-house-mcp · data-gov-uk-mcp — supplier vetting + data |
| E11 | Office of Government Property (OGP) | London | Government estate strategy · property controls · disposals | DEFONEOS MCPs: sentinel-hub-mcp · data-gov-uk-mcp — estate EO + data |
| # | Priority | Owning body | DEFONEOS MCP coverage | Alignment cross-walk |
|---|---|---|---|---|
| P1 | Spending Review fiscal discipline (debt falling as % of GDP) | HMT Public Spending | data-gov-uk-mcp · bft-council-probe | SR DEL/AME · fiscal rules · BFT evidence |
| P2 | Independent economic forecasting & Charter compliance | OBR | ons-statistics-mcp · data-gov-uk-mcp | EFO · fiscal mandate · forecast provenance |
| P3 | Public debt management & gilt issuance transparency | DMO | sovereign-keystore · data-gov-uk-mcp | Gilt remit · provenance chain · DMO remit |
| P4 | Value for Money audit & Whole of Government Accounts | NAO | bft-council-probe · sovereign-keystore | VfM studies · WGA · BFT audit evidence |
| P5 | Major projects oversight (GMPP ratings & delivery) | IPA | data-gov-uk-mcp · bft-council-probe | GMPP · AIPA ratings · project data + BFT |
| P6 | Green gilt & sustainability-linked fiscal instruments | HMT Enterprise Strategy | sovereign-keystore · data-gov-uk-mcp | Green gilt framework · provenance · ESG |
| P7 | Public sector pay & pension fiscal sustainability | HMT Public Services | ons-statistics-mcp · data-gov-uk-mcp | Pay review bodies · pension valuations · workforce |
| P8 | Government estate optimisation & property controls | OGP / HMT | sentinel-hub-mcp · data-gov-uk-mcp | Estates strategy · disposals · EO verification |
| # | MCP server | Category | Description |
|---|---|---|---|
| 1 | data-gov-uk-mcp | Fiscal Open Data Infrastructure | HMT spending data · OBR forecasts · DMO gilt data · NAO audit reports · ONS public finance statistics · IPA project data · local authority spending · regional fiscal data |
| 2 | bft-council-probe | Fiscal Audit & Governance | 33-agent BFT chain for expenditure audit · VfM determination · fiscal rule compliance · major project delivery assessment · spending review allocation verification |
| 3 | sovereign-keystore | Fiscal Provenance & Gilt Chain | Ed25519-signed spending review allocations · gilt issuance provenance · green gilt ESG tracking · Budget Statement version chains ·DEL/AME approval records |
| 4 | ons-statistics-mcp | Economic Forecasting Data | GDP · inflation (CPIH) · unemployment · public sector net borrowing · public sector net debt · productivity · trade balance · regional economic indicators |
| 5 | companies-house-mcp | Supplier & Entity Vetting | Supplier due diligence for CCS frameworks · beneficial ownership · group structures for major contract · subcontractor chain verification · spending control entity checks |
| 6 | sentinel-hub-mcp | Estate & Property EO Verification | Copernicus imagery for government estate monitoring · infrastructure project progress verification · property disposal verification · brownfield development tracking |
The UK fiscal policy digital backbone spans HM Treasury's Consolidated Fund and National Loans Fund accounting systems, the Online System for Central Accounting and Reporting (OSCAR) for departmental resource accounts, the DMO's gilt auction and settlement platform, the OBR's forecasting models, the NAO's audit management systems and Whole of Government Accounts compilation, the IPA's Major Projects Authority database (GMPP ratings), the Government Property Finder and OGP estates database, the Crown Commercial Service frameworks portal, the HM Treasury spending review modelling tools, and the Public Sector Procurement and Spend Controls platform. The 2025 fiscal framework mandates digital-first public finance management with real-time expenditure tracking, independent verification, and transparent fiscal reporting. DEFONEOS integrates via BFT-governed fiscal audit, sovereign spending provenance, gilt chain transparency, and AI-augmented fiscal analysis. All evidence is curl-verifiable at the protocol layer.
| Step | Action | Owner | Time | Evidence |
|---|---|---|---|---|
| 1 | Buyer identifies fiscal audit / spending transparency / gilt provenance requirement | Buyer | — | Requirement document |
| 2 | CSOAI sends DEFONEOS treasury pack + 30-day pilot pricing (T1 £2,840 / T2 £9,150 / T3 £28,400) | CSOAI | 1 hour | This page (curl-verifiable) |
| 3 | Buyer reviews BFT fiscal audit chain + spending provenance + OBR/HMT/NAO alignment | Buyer | 2-4 hours | curl -s /health + treasury pack |
| 4 | Submit fiscal framework / NAO audit evidence / spending review integration | Buyer | 1-2 hours | Procurement pack |
| 5 | CSOAI provisions fiscal-sovereign VM + DEFONEOS substrate + audit evidence chain | CSOAI | <24 hours | AG-1: curl -s /health HTTP 200 |
⚠️ HARD RED-LINE: DEFONEOS handles OFFICIAL and OFFICIAL-SENSITIVE fiscal data ONLY. No individual citizen financial surveillance. No fiscal data exfiltration to non-Treasury actors. No political interference in independent fiscal forecasts. No use of fiscal AI to influence election timing or Budget content. No disclosure of market-sensitive gilt or fiscal data outside regulated channels. AI supports fiscal transparency, expenditure audit integrity, spending provenance, gilt chain verification, and public finance accountability — never individual surveillance, market manipulation, or political interference. All fiscal evidence is BFT-governed with 23/33 quorum and independently verifiable. DEFONEOS strictly supports the Charter for Budget Responsibility, the National Audit Act, and the Government Resources and Accounts Act 2000.
| Buyer type | Entry point | Procurement vehicle | Security requirement | Pilot tier |
|---|---|---|---|---|
| HM Treasury (core) | E1 / E2 / E7 / E9 | HMT framework · GCF · Crown Commercial | OFFICIAL-SENSITIVE | T2/T3 |
| Office for Budget Responsibility | E3 | OBR framework · direct | OFFICIAL | T1/T2 |
| Debt Management Office | E4 | DMO framework · direct | OFFICIAL-SENSITIVE | T2/T3 |
| National Audit Office | E5 | NAO framework · direct | OFFICIAL | T1/T2 |
| Infrastructure & Projects Authority | E6 | IPA framework · Cabinet Office | OFFICIAL | T1/T2 |
| GAD / OGP / CCS | E8 / E11 / E10 | AGD framework · OGP framework · CCS | OFFICIAL | T1/T2 |