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2 min readBlockingBank of England taxonomy 2.2.0Updated 11 November 2026

Solvency capital requirement - non-life and health catastrophe risk: values must agree (IR.27.01, Bank of England rule IR_bv0628)

A blocking check on the solvency capital requirement - non-life and health catastrophe risk template (IR.27.01), in the annual solo (ARS) return.

Check your file for this rule

The rule in plain words

The item "Diversification between perils" reported in Solvency Capital Requirement - Non-life and Health catastrophe risk (IR.27.01.01.01) should be equal to the difference between "Man-made catastrophe risk" and the sum of all risks reported

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 IR.27.01 as reported.

The cells it reads

Solvency capital requirement - non-life and health catastrophe risk: non-life and health catastrophe risk - summary (IR.27.01.01.01)

Rows

  • R0090Man-made catastrophe risk
  • R0100Motor vehicle liability
  • R0110Marine
  • R0120Aviation
  • R0130Fire
  • R0140Liability
  • R0150Credit & Suretyship
  • R0160Diversification between perils

Columns

  • C0010SCR before risk mitigation
  • C0030SCR after risk mitigation

Solvency capital requirement - non-life and health catastrophe risk: man made catastrophe risk - motor vehicle liability (IR.27.01.01.08)

Row

  • R2100Motor Vehicle Liability

Columns

  • C0540Catastrophe Risk Charge Motor Vehicle Liability before risk mitigation
  • C0570Catastrophe Risk Charge Motor Vehicle Liability after risk mitigation

Solvency capital requirement - non-life and health catastrophe risk: man made catastrophe risk - marine (IR.27.01.01.11)

Row

  • R2420Total after diversification

Columns

  • C0760Catastrophe Risk Charge Marine before risk mitigation
  • C0780Catastrophe Risk Charge Marine after risk mitigation

Solvency capital requirement - non-life and health catastrophe risk: man made catastrophe risk - aviation (IR.27.01.01.12)

Row

  • R2500Gross Catastrophe Risk Charge Aviation

Columns

  • C0810Catastrophe Risk Charge Aviation before risk mitigation
  • C0840Catastrophe Risk Charge Aviation after risk mitigation

Solvency capital requirement - non-life and health catastrophe risk: man made catastrophe risk - fire (IR.27.01.01.13)

Row

  • R2600Fire

Columns

  • C0850Catastrophe Risk Charge Fire before risk mitigation
  • C0880Catastrophe Risk Charge Fire after risk mitigation

Solvency capital requirement - non-life and health catastrophe risk: man made catastrophe risk - liability (IR.27.01.01.15)

Row

  • R2820Total after diversification

Columns

  • C0960Catastrophe Risk Charge Liability before risk mitigation
  • C0980Catastrophe Risk Charge Liability after risk mitigation

Solvency capital requirement - non-life and health catastrophe risk: man made catastrophe risk - credit & suretyship (IR.27.01.01.18)

Row

  • R3120Total after diversification

Columns

  • C1100Catastrophe Risk Charge Credit & Suretyship before risk mitigation
  • C1120Catastrophe Risk Charge Credit & Suretyship after risk mitigation

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 "Diversification between perils" reported in IR.27.01.01.01 - Solvency Capital Requirement - Non-life and Health catastrophe risk should be equal to the difference between "Man-made catastrophe risk" and the sum of all risks reported.
Show the formulaShow

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

{t: IR.27.01.01.01, r: R0160, z: Z0001} = {t: IR.27.01.01.01, r: R0090, z: Z0001} - sum({t: IR.27.01.01.01, r: R0100; R0110; R0120; R0130; R0140; R0150, z: Z0001})

Every Solvency UK rule on IR.27.01

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.