1 min readBlockingBank of England taxonomy 2.2.0Updated 11 November 2026

Solvency capital requirement - non-life underwriting risk: a check on its values (IRR.26.05, Bank of England rule IR_bv0772_02)

A blocking check on the solvency capital requirement - non-life underwriting risk template (IRR.26.05), in the annual solo (ARS) return.

The rule in plain words

The item "Ring Fenced Fund/Matching adjustment portfolio or remaining part" should be reported in Solvency Capital Requirement - Non-Life underwriting risk (IRR.26.05) [RFF/MP/RM]

The headline gives only the template and the kind of check, because the rule is too long to say in a headline. The plain words above say all of it.

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 IRR.26.05 as reported.

The cells it reads

Solvency capital requirement - non-life underwriting risk - non-life premium and reserve risk (IRR.26.05.01.02)

Row

  • R0300Non-life premium and reserve risk

Column

  • C0100Solvency capital requirement

Which returns it applies to

Line4 Check runs it on annual solo (ARS) return on Bank of England taxonomy 2.2.0. The Bank of England applies it to annual solo (ARS) returns, as a blocking check.

The Bank’s own words and formula

In the Bank of England’s list of validations, word for word:

The item "Ring Fenced Fund/Matching adjustment portfolio or remaining part" should be reported in IRR.26.05 - Solvency Capital Requirement - Non-Life underwriting risk [RFF/MP/RM].
Show the formulaShow

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

not(isNull({t: IRR.26.05.01.02, r: R0300, c: C0100, z: Z0001, filter: [s2c_dim:PO] = [s2c_PU:x96] or [s2c_dim:PO] = [s2c_PU:x53] or [s2c_dim:PO] = [boec_s2c_PU:b5]}))

Every Solvency UK rule on IRR.26.05

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.