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In forceResolutionLast checked 11 November 2026

MREL resources (MRL001)

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

Reports the firm's MREL resources: the own funds and eligible liabilities that count towards its minimum requirement for own funds and eligible liabilities (MREL), which the Bank of England directs it to maintain under section 3A of the Banking Act 2009. Source

Official title: MRL001 MREL Resources

The facts

Who files
Firms to which the Resolution Pack Part applies (UK banks, building societies, PRA-designated investment firms and their qualifying parent undertakings) that are set, or notified they are likely to be set, an external or internal MREL above minimum capital requirements, and/or whose preferred resolution strategy uses stabilisation powers (bail-in or transfer) (PS9/26 paragraph 1.5). Source
How often
Quarterly (BEEDS MREL reporting schedule 2026). Source
Deadline
Within 30 business days of the period end, for example 12 May 2026 for 31 March 2026 data (BEEDS MREL reporting schedule 2026). Source
Format
XBRL-XML. XBRL instance on the Bank of England Banking taxonomy, filed through BEEDS (BEEDS MREL collection; the entry point mapping lists mrl001, mrl002 and mrl003, mrel/2018-03-31). The revised MRL001 and MRL003 use entry points mrel/2026-06-22 in taxonomy v4.1.0 and later. Source
How it is filed
Filing routes recorded for the PRA: BEEDS (Bank of England Electronic Data Submission portal); RegData (Financial Conduct Authority). See how firms file with the PRA.
Status
In forceRevised MRL001 and MRL003 templates take effect on 1 January 2027 and are first submitted in February 2027 for 31 December 2026 data. Firms whose preferred resolution strategy is transfer no longer need to submit MRL001 (PS9/26 paragraphs 1.12 to 1.14). Source
Legal basis
Group
Resolution

Templates (4)

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

  • MREL Resources (MR02.01.01)
  • MREL Resources. Critical service provider (MR02.02.01)
  • General Information (MR700.00.01)
  • MREL Resources. Identification of Critical Service Provider (MR700.01.01)

Codes and names are the template groups of entry point MRL001 in the Bank of England Banking taxonomy v3.7.0 hotfix (mrel/2018-03-31, in force until 31 December 2026) (module presentation linkbase and table-group labels). The code is the template code plus a version suffix. Source

Validation rules

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

How they are written: Excel rule list with an expression column and severity per entry point; rules marked Include in XBRL are also XBRL formula assertions in the taxonomy package.

For the revised template from 1 January 2027, the v4.1.1 MREL workbook lists 15 rules for MRL001.

The rules, on bankofengland.co.uk

How they were counted

Rows in sheet 'mrel' of 'Bank of England Banking Taxonomy Validations MREL v3.7.0.xlsx' (inside the validations ZIP, release 3.7.0) whose 'Severity and modules' column names MRL001. 34 rules: 34 active (Deactivated = no), 34 marked Include in XBRL = yes; 32 errors and 2 warnings. A rule shared by several entry points is counted once for each.

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 publication of this data, firm by firm or added up, was found on the Bank of England pages read. The PRA does not publish individual firms' returns. Source

Official documents (13)

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.