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2 min readBlockingBank of England banking taxonomy 4.1.1Updated 11 November 2026

All the data entries in the MREL Resources table are mandatory and must be reported. Blank values are not acceptable (MR02.01.01.01, Bank of England check boe_b4103_1)

A blocking check on the MREL Resources - nominal outstanding value template (MR02.01.01.01), in the MREL resources (MRL001) return.

Line4 Check runs it on the MREL resources (MRL001) return, proven on test files, check by check: the same outcome on all eight test files of that return.

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The rule in plain words

All the data entries in the MREL Resources table are mandatory and must be reported. Blank values are not acceptable

In MREL Resources - nominal outstanding value (MR02.01.01.01): exactly 133 values must be reported in 19 rows (listed below) in 7 columns (listed below).

This is a blocking check. A return that fails it is normally rejected, so fix it before you submit. It runs only when your filing indicators mark MR02.01.01 as reported.

The cells it reads

MREL Resources - nominal outstanding value (MR02.01.01.01)

Rows

  • R005AT1 capital instruments that qualify to count towards MREL
  • R030Tier 2 capital instruments that qualify to count towards MREL
  • R050MREL contractually or statutorily subordinated eligible liabilities (senior non-preferred)
  • R060MREL senior unsecured eligible liabilities (holding company issued senior)
  • R070Liabilities that do not qualify for MREL but which rank pari passu with any MREL resources
  • R073Liabilities that do not qualify for external MREL, calculated as a proportion of external MREL resources where the ratio exceeds 2.5%
  • R075Liabilities that do not qualify for internal MREL, calculated as a proportion of internal MREL resources where the ratio exceeds 2.5%
  • R077For any creditor class, does the ratio of liabilities that do not qualify for external MREL, calculated as a proportion of external MREL resources in the same creditor class, exceed 10%?
  • R079For any creditor class, does the ratio of liabilities that do not qualify for internal MREL, calculated as a proportion of internal MREL resources in the same creditor class, exceed 10%?
  • R080Total MREL resources
  • R085Shares that do not qualify for CET1
  • R090For multiple point of entry (MPE) resolution groups only: exposures to other resolution groups or entities or sub-groups, that correspond to MREL eligible liabilities instruments
  • R100Institution’s holdings of MREL eligible liabilities instruments issued by the institution itself
  • R110Institution’s holdings of MREL eligible liabilities instruments of other entities with reciprocal cross-holdings
  • R120Institution’s holdings of MREL eligible liabilities instruments of G-SIB entities without significant investment in those entities
  • R130Of which held in the trading book for no longer than 30 business days, without significant investment
  • R140Institution’s holdings of MREL eligible liabilities instruments of G-SIB entities in which the institution has a significant investment
  • R143Of which held in the trading book for no longer than 30 business days, with significant investment
  • R160AT1 capital instruments that do not qualify for MREL

Columns

  • C010Less than one year (nominal outstanding value)
  • C020One year and greater, less than two years (nominal outstanding value)
  • C030Two years and greater, less than five years (nominal outstanding value)
  • C040Five years and greater (nominal outstanding value)
  • C050Perpetual (nominal outstanding value)
  • C060Calculated amount that does not have maturity (nominal outstanding value)
  • C070Current reporting aggregate (nominal outstanding value)

Which returns it applies to

Line4 Check runs it on the MREL resources (MRL001) return on Bank of England banking taxonomy 4.1.1. The Bank of England applies it to MREL resources (MRL001) returns, as a blocking check.

The Bank’s own words and formula

The first paragraph of the plain words above is the Bank of England’s own, word for word, from its list of validations. The second spells out its formula, with each cell named from its templates.

Show the formulaShow

The Bank of England's formula. Cells are written as {t: table, r: row, c: column}.

count({t: MR02.01.01.01, r: 005; 030; 050; 060; 070; 073; 075; 077; 079; 080; 085; 090; 100; 110; 120; 130; 140; 143; 160, c: 010; 020; 030; 040; 050; 060; 070})=133

Every PRA banking rule on MR02.01.01.01

Checks like this one, run at the point of submission, are the first step to real-time supervision. Line4 builds SupTech software for financial regulators that runs checks like these as each return arrives.