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In forceSolvency UK: insurance groupsLast checked 11 November 2026

Annual solvency return for an insurance group (ARG)

A regulatory return listed by the Bank of England (PRA), insurers, United Kingdom.

The annual return for an insurance group. It covers the group balance sheet, investments, own funds, group SCR, the companies in the group and their own capital requirements, each one's share of group technical provisions, reinsurance and intra-group transactions. It is the group counterpart of the annual return for a single insurer. Source

Official title: Annual Solvency II reporting Group

Check a ARG file, free

The facts

Who files
Firms or UK holding companies that must report information on a group to the PRA under the Group Supervision Part (Reporting Chapter 2A, Article 1(2)). Source
How often
Annual, at the group's financial year end. Source
Deadline
No later than 100 business days after the group's financial year end (Reporting 2.5B(7)). For a 31 December 2026 year end this is 26 May 2027. Source
Format
XBRL-XML. An XBRL instance for entry point ARG of the Bank of England Insurance Taxonomy, uploaded in BEEDS as an XBRL file or a zip containing it. Filing rules are in the Bank's XBRL Filing Manual v1.0.1. Source
How it is filed
Filing routes recorded for the PRA: BEEDS (Bank of England Electronic Data Submission portal); Email to the Bank's insurance data mailbox. See how firms file with the PRA.
Status
In force
Legal basis
Group
Solvency UK: insurance groups
Check a file before you file it

Line4 Check for Solvency UK runs the Bank of England's own validation rules on a ARG file in your browser, free. Your file never leaves your computer. What it runs, from its published manifest:

  • Bank of England Insurance Taxonomy 2.2.0: all 425 of the Bank's XBRL validation rules for this return.
  • Also the 49 filing checks from the Bank's XBRL Filing Manual v1.0.1.

It is not a substitute for the validation the supervisor runs when you submit.

Templates (36)

The tables and forms inside the return. Plain name first, the PRA's code in brackets.

  • Content of the submission (IR.01.01.04)
  • Basic information - general (IR.01.02.04)
  • Basic information - RFF and matching adjustment portfolios (IR.01.03.04)
  • Balance sheet (IR.02.01.01)
  • Assets and liabilities by currency (IR.02.02.01)
  • Off-balance sheet items - General (IR.03.01.04)
  • Off-balance sheet items - unlimited guarantees received (IR.03.02.04)
  • Off-balance sheet items - unlimited guarantees provided (IR.03.03.04)
  • Premiums, claims and expenses by country (IR.05.02.01)
  • Life income and expenditure (IR.05.03.02)
  • Non-life income and expenditure (IR.05.04.02)
  • List of assets (IR.06.02.04)
  • Collective investment undertakings - look-through approach (IR.06.03.01)
  • Open derivatives (IR.08.01.04)
  • Income/gains and losses in the period (IR.09.01.04)
  • Securities lending and repos (IR.10.01.04)
Show all 36 templates
  • Assets held as collateral (IR.11.01.04)
  • Impact of long term guarantees measures and transitionals (IR.22.01.04)
  • Own funds (IR.23.01.04)
  • Detailed information by tiers on own funds (IR.23.02.04)
  • Annual movements on own funds (IR.23.03.04)
  • List of items on own funds (IR.23.04.04)
  • Solvency Capital Requirement (IR.25.04.04)
  • Solvency Capital Requirement - Partial or full internal model components (IR.25.05.01)
  • Reinsurer and collateral provider entity information (IR.30.05.01)
  • Outwards reinsurance balance sheet exposures (IR.31.01.04)
  • Undertakings in the scope of the group (IR.32.01.04)
  • Insurance and Reinsurance individual requirements (IR.33.01.04)
  • Other regulated and non-regulated financial undertakings (IR.34.01.04)
  • Contribution to group Technical Provisions (IR.35.01.04)
  • IGT - Equity-type transactions, debt and asset transfer (IR.36.01.01)
  • IGT - Derivatives (IR.36.02.01)
  • IGT - Cost Sharing, contingent liabilities, off BS and other items (IR.36.04.01)
  • Content of the submission (IRR.01.01.04)
  • Balance sheet (IRR.02.01.01)
  • Solvency Capital Requirement (IRR.25.04.01)

Templates of the v2.2.0 entry point, which applies to reporting reference dates on or after 31 December 2026 (frameworks DIS, IR, IMO and MAL take effect on 1 January 2027). Filings for earlier dates use taxonomy v2.0.2 or v2.1.0. Names are the Bank's template labels in the taxonomy. Source

Validation rules

425 rules, as counted from the PRA's published material. Software can run them exactly as published. Source

How they are written: XBRL Formula 1.0 assertions in the taxonomy package (val folder of each framework), plus an Excel list of every rule with its expression, severity and entry points.

The rules, on bankofengland.co.uk

How they were counted

Distinct rule codes in sheet 'ir' of 'Bank of England Insurance Taxonomy Validations v2.2.0 - IR.xlsx' (validations zip) whose 'Severity and modules' column names ARG, with 'Include in XBRL' = yes and 'Deactivated' = no (426), less 1 rule code set to 'Deactivate' on sheet 'Version 2.2.0' of the validation deny list. The sheet lists 438 rule codes for ARG in all; 12 have 'Include in XBRL' = no.

Counts are in the PRA's own unit, so they are not comparable with other regulators' counts.

Public data

No published data from this return was found. No published data from this return was found on the Bank of England statistics pages checked (insurance aggregate data, annual and quarterly). Source

Official documents (21)

The PRA's own files, with the size and SHA-256 fingerprint of each as downloaded on 11 November 2026, so anyone can tell whether a copy is the same version.

Sources

Every page and document this return's facts were read from.

Knowing exactly what is collected, in what format and under which rules is the first step to real-time supervision. Line4 builds SupTech software for financial regulators that runs checks like these as each return arrives.

Line4's text and records here are free to reuse under CC BY 4.0. Please credit: “Source: Line4 regulatory submissions library (CC BY 4.0), https://www.line4.ai”. The regulators' documents, forms, taxonomies, rules and data belong to them: see PRA's reuse terms. This describes what regulators publish. It is not legal or regulatory advice: always rely on the regulator's own text.

Last checked 11 November 2026.