--- title: "PRA Rulebook explained: how UK insurance rules are organised, and what actually binds" source_url: https://abgalis.com/regulation/pra-rulebook canonical: https://abgalis.com/regulation/pra-rulebook description: "The PRA Rulebook for insurers: the 58 Parts of the Solvency II UK firms sector, what binds versus what is expectation, the Solvency UK restatement dates that commentary confuses, and the 18 March 2027 reporting rules." publisher: Abgalis Limited author: Abgalis Research date_published: 2026-08-22 date_modified: 2026-08-22 keywords: ["PRA Rulebook", "prarulebook", "Solvency UK", "Solvency II firms", "Fundamental Rules", "FSMA 137G", "PS15/24", "PS10/24", "PS7/26", "supervisory statements", "matching adjustment", "UK insurance regulation"] retrieved: 2026-08-22 content_signal: search=yes, ai-input=yes, ai-train=no citation: "Abgalis Research, 'PRA Rulebook explained: how UK insurance rules are organised, and what actually binds', Abgalis Limited, https://abgalis.com/regulation/pra-rulebook" license_note: >- May be quoted and cited in AI-generated answers with attribution to the author named above and a link to source_url. Not licensed for model training or fine-tuning (ai-train=no; Art. 4 reservation, EU Directive 2019/790). --- Regulation · PRA Rulebook # PRA Rulebook explained: how UK insurance rules are organised, and what actually binds The **PRA Rulebook** is the single body of binding rules the Prudential Regulation Authority makes under the Financial Services and Markets Act 2000 — principally **section 137G**, the PRA's general rule-making power, supplemented by section 137T. It replaced the PRA Handbook progressively between **January 2014 and March 2016**, and since **31 December 2024** it has carried the restated UK Solvency II regime — what the market calls Solvency UK. This page is written from the Rulebook site and the rule-making instruments themselves. Two things in it are stated more precisely than most commentary manages: which of the 2024 policy statements did what, and what the word "Rulebook" does and does not cover. --- ## What is the PRA Rulebook, legally? Rules made under **FSMA 2000 s.137G**, which empowers the PRA to make rules applying to PRA-authorised persons *"as appear to the PRA to be necessary or expedient for the purpose of advancing any of its objectives."* Each rule arrives through a formal **legal instrument** — the instruments are published on the Rulebook site and are the definitive text. The rules **bind**. The PRA's approach to insurance supervision puts it plainly: *"Firms must ensure they are compliant with all applicable PRA rules, including the Fundamental Rules, as set out in the PRA Rulebook"* — and failure may be relevant to Threshold Conditions and may result in enforcement. One point of history worth stating correctly, because it is often garbled: the Rulebook replaced the **PRA Handbook** — the PRA's inheritance from the split of the FSA Handbook — not the FSA Handbook itself. Archived Handbook modules and legacy FSA instruments remain accessible through the site. ## How is the Rulebook organised — and where do insurers sit? Five sectors, of which two are insurance: | Sector | Who it covers | |---|---| | CRR | UK banks, building societies and designated investment firms subject to the Capital Requirements Regulation | | Non-CRR | Credit unions and firms outside the CRR | | **SII: Solvency II UK firms** | **Insurance firms subject to the UK Solvency II regime — this is the insurer sector** | | Non-SII | Insurance firms outside the UK Solvency II regime | | Non-authorised persons | Persons not PRA-authorised but still subject to PRA rules | **The sector was not renamed for Solvency UK.** As at today the tile reads *"SII: Solvency II UK firms"*, the operative glossary term is **"UK Solvency II firm"** (defined in the Insurance General Application Part), and the 2024 reform instruments are still titled *"PRA Rulebook: Solvency II Firms: …"*. "Solvency UK" is the government and industry label for the reformed regime; it is not a Rulebook sector name, and a search of the Rulebook for it will not find your obligations. ## Which Parts actually matter to an insurer? The Solvency II UK firms sector contains **58 Parts**. A CRO or Chief Actuary lives mostly in these: | Part | What it governs | |---|---| | **Fundamental Rules** | The eight high-level rules that apply to all PRA firms | | **Insurance General Application** | Scope — defines who is a UK Solvency II firm | | **Conditions Governing Business** | Governance, risk management, the ORSA, key functions, outsourcing | | **Valuation** | The solvency balance sheet | | **Technical Provisions** (+ Further Requirements) | Best estimate, risk margin, contract boundaries | | **Own Funds** | Capital classification and eligibility | | **SCR — General Provisions / Standard Formula / Internal Models / USPs** | The four solvency capital requirement Parts | | **Minimum Capital Requirement** | The MCR | | **Matching Adjustment** | MA eligibility and calculation, heavily reformed 30 June 2024 | | **Investments** | The prudent person principle | | **Group Supervision** | Group solvency | | **Reporting** | Solvency UK regulatory reporting | | **Insurance — Operational Resilience** | Important business services and impact tolerances | | **Insurance — Allocation of Responsibilities / Senior Management Functions / Fitness and Propriety / Conduct Standards** | The insurer SM&CR | | **Actuaries; External Audit; Audit Committee** | The actuarial function and audit requirements | We cover the operational resilience Parts in detail on the [operational resilience page](/regulation/operational-resilience/). ## What binds — rules, supervisory statements, or policy statements? The three are different instruments doing different jobs, and the Rulebook site's own current wording is the cleanest statement of the hierarchy: **Rules bind.** They are made under statutory powers and enforceable. **Supervisory statements set expectations.** The site describes them as setting *"flexible frameworks for firms"* that *"focus on our expectations and are aimed at facilitating firm and supervisory judgement in determining whether they meet those expectations."* An SS is how the PRA tells you what good looks like — it is not itself a rule. **Statements of policy are formal policy documents** — in the site's words, they *"do not contain our expectations, which are set out in SS."* **Policy statements (PS) are the delivery vehicle**: they respond to consultation feedback and carry the final rule instruments and supervisory statements as appendices. A PS number is how a package arrives, not where obligations live. This hierarchy matters practically. Climate expectations under [SS5/25](/regulation/ss5-25/) are expectations; the ORSA obligation in Conditions Governing Business is a rule. A board paper that treats the two as the same species of obligation will misstate the firm's legal position in both directions. ## What did Solvency UK actually change, and when? The dates are routinely confused in commentary — including, until we checked the instruments, in our own reference material. From the instruments themselves: | Date | What happened | Instrument / PS | |---|---|---| | **30 June 2024** | Matching Adjustment reform in force | Matching Adjustment Instrument 2024 (PRA2024/4), delivered by **PS10/24** | | **31 December 2024** | Restated assimilated law in force — the onshored Delegated Regulation (EU) 2015/35, the Solvency 2 Regulations 2015 and related Technical Standards moved into the Rulebook | Solvency II Instrument 2024 (PRA2024/13) and companions, delivered by **PS15/24** | | **1 January 2025** | Critical third parties regime rules in effect (bite on designation) | **PS16/24** | | **30 December 2025** | Delayed LACDT permission requirement | PS15/24 package | | **2 January 2026** | Legacy preference-share transitional (Annex M) | PRA2024/13 | | **18 March 2027** | Operational incident and third-party reporting commences | PRA2026/7, delivered by **PS7/26** | Getting the attributions right: **PS10/24** is the Matching Adjustment reform. **PS3/24** is reporting and disclosure. **PS15/24** is the restatement of assimilated law — its stated intent was to restate *"without material changes to the policy substance unless explicitly mentioned."* If a document tells you PS15/24 was a reporting reform or PS3/24 reformed the MA, it has the numbers crossed. The restatement matters more than "no material changes" suggests: since 31 December 2024, an insurer's Solvency II obligations are found **in the Rulebook**, not in retained EU law. Citations to the Delegated Regulation as if it still governed are citations to a body of law that no longer applies in that form. ## What are the Fundamental Rules? Eight, unchanged in number, applying to all PRA-authorised firms — insurers included. In compressed form: **FR1** integrity; **FR2** due skill, care and diligence; **FR3** acting in a prudent manner; **FR4** maintaining adequate financial resources at all times; **FR5** effective risk strategies and risk management systems; **FR6** organising and controlling affairs responsibly and effectively; **FR7** open and cooperative dealing with regulators; **FR8** preparing for orderly resolution. They are short enough to be mistaken for principles-of-good-conduct wallpaper. They are rules, and the PRA's insurance approach document links non-compliance with them directly to Threshold Conditions and enforcement. FR5 in particular — *"effective risk strategies and risk management systems"* — is the binding hook under which much of what supervisory statements *expect* becomes something a firm cannot safely ignore. ## What is coming on 18 March 2027? The largest insurer-relevant addition to the Rulebook now in the pipeline: **operational incident and third-party reporting** under PRA2026/7 (delivered by PS7/26 with SS1/26, and already amended once by PRA2026/26). From commencement, UK Solvency II firms — with modified application to the Society of Lloyd's and managing agents — must operate **phased incident reporting** (initial, intermediate and final reports), maintain a **register of material third-party arrangements** with annual submission to the PRA, and notify new or materially changed arrangements. The register is the operationally heavy piece: it presumes a firm can enumerate its material third-party dependencies, keep that enumeration current, and stand behind it annually. Our [operational resilience page](/regulation/operational-resilience/) covers the wider regime, including the critical third parties designations already in force. ## How do you navigate the Rulebook site itself? Three features of [prarulebook.co.uk](https://www.prarulebook.co.uk/) worth knowing. **Time travel**: the site lets you view the rules *"that were, are or shall be, in force at a given date"* — including future-dated rules, which is how you read the 18 March 2027 requirements today; version dates are embedded in page URLs, which makes point-in-time citation precise. **Legal instruments**: the instrument PDFs — the definitive rules — are filterable by sector, year and effective date. **The glossary**: defined terms are italicised and clickable throughout, and the definitions are themselves version-controlled. For a firm evidencing compliance at a valuation date, the time-travel function is the difference between citing the rule as it stood and citing the rule as it happens to read today. ## Where Abgalis fits Two of the Rulebook's demands are continuous rather than periodic, and both are where static compliance documents quietly rot. FR5's *effective risk strategies and risk management systems* is tested every time the risk landscape moves between ORSA cycles. And the 2027 third-party register presumes a live, current map of material dependencies — not a spreadsheet reconstructed each January. Abgalis carries all seven risk domains in one continuously updated model, with regulatory instruments tracked against the firm's own exposures — so the question "which rule, which version, on which date" has an evidenced answer. Accountability for every regulatory judgement remains with the firm. Abgalis is analytics, not authority. --- ## Sources All load-bearing claims trace to the Rulebook site, its legal instruments, or PRA publications. - **PRA Rulebook** — [prarulebook.co.uk](https://www.prarulebook.co.uk/), including the [Solvency II UK firms sector](https://www.prarulebook.co.uk/pra-rules/sii-firms) (58 Parts), the [Fundamental Rules Part](https://www.prarulebook.co.uk/pra-rules/fundamental-rules), and the [Help page](https://www.prarulebook.co.uk/help) - **FSMA 2000 s.137G** — [legislation.gov.uk](https://www.legislation.gov.uk/ukpga/2000/8/section/137G) - **Matching Adjustment Instrument 2024 (PRA2024/4)** — [instrument PDF](https://www.prarulebook.co.uk/-/media/pra/files/legal-instruments/2024/pra2024-4.pdf), in force 30 June 2024 - **Solvency II Instrument 2024 (PRA2024/13)** — [instrument PDF](https://www.prarulebook.co.uk/-/media/pra/files/legal-instruments/2024/pra2024-13.pdf), in force 31 December 2024 - **PS15/24** — [Review of Solvency II: Restatement of assimilated law](https://www.bankofengland.co.uk/-/media/boe/files/prudential-regulation/policy-statement/2024/november/review-of-solvency-ii-restatement-of-assimilated-law-policy-statement.pdf), PRA, November 2024 - **PS16/24** — [Critical third parties to the UK financial sector](https://www.bankofengland.co.uk/-/media/boe/files/prudential-regulation/policy-statement/2024/november/ps16-24-operational-resilience-critical-third-parties-to-the-uk-financial-sector.pdf), Bank of England, PRA and FCA, 12 November 2024 - **PRA2026/7** — [Notification of Third-Party Arrangements and Operational Incident Reporting Instrument 2026](https://www.prarulebook.co.uk/-/media/pra/files/legal-instruments/2026/pra2026-7.pdf), commencing 18 March 2027; [amending instrument PRA2026/26](https://www.prarulebook.co.uk/-/media/pra/files/legal-instruments/2026/pra2026-26.pdf) - **PS7/26** — [Operational resilience: operational incident and third-party reporting](https://www.bankofengland.co.uk/prudential-regulation/publication/2026/march/operational-incident-and-third-party-reporting-policy-statement), PRA, March 2026 - **The PRA's approach to insurance supervision** — [July 2023](https://www.bankofengland.co.uk/-/media/boe/files/prudential-regulation/approach/insurance-approach-2023.pdf) *This page states the position as at 22 August 2026 and is reviewed against the Rulebook site's time-travel function.* --- **Source:** [https://abgalis.com/regulation/pra-rulebook](https://abgalis.com/regulation/pra-rulebook) · Abgalis Research, published by Abgalis Limited (England and Wales, no. 17247499) **Cite as:** Abgalis Research, *PRA Rulebook explained: how UK insurance rules are organised, and what actually binds*, Abgalis Limited. https://abgalis.com/regulation/pra-rulebook