MFI holdings of securities (AS) return

Details about the Form AS return including deadlines, instructions, and contact details.

Key facts

Data to be reported: Reporters’ own holdings of securities held for their own purposes. Securities are defined as negotiable financial instruments that either serve as evidence of debt, or entitle holders to a share of both distributed profits and the residual values of the corporation’s asses in the event of liquidation             
Who has to report:

A select sample of UK resident bank and building societies, who are contacted by the Bank of England directly

Data uses:

Multiple, including:

Frequency:

Quarterly 

Coverage: Go to reporting criteria to find detailed calculations used to determine eligibility

Deadlines

Firms need to report their figures as at the last day of each month within the reporting period – as per the definitions. The deadline for reporting is working day 18 of the month following the end of the reporting period.

Go to reporting criteria to download deadlines for all returns for all available years.

Reporting period Reporters impacted Deadline
(5pm UK time)
Concessionary deadline
(5pm UK time)
Deadlines for 2026 will be released in October 2025.

 

Instructions

Overview of reported data

This return captures debt securities and equity securities held by UK resident banks and building societies, that would be classified on Form BT to be within items BT23 (E, F, GA, GC, J, L only), BT26 and BT32 (all items except E and J). 

It also captures further information about each security including currency, issue date, final maturity date, issuer name, issuer residency, and coupon type.

In every return firms also need to include:

  • their company name
  • their legal entity identifier (LEI) or firm reference number (FRN)
  • the first day of the reporting period
  • the last day of the reporting period

Core documents

You can find detailed instructions in the documents below. 

Form AS specific documents

Document Notes for AS reporters Last updated
Form AS definitions (PDF)
Includes a high level overview of AS with tips for common reporting issues
27 Feb 2022
BoE statistics taxonomy 1.3.0 (ZIP) The machine-readable package required to compile statistical returns, plus the associated validations to be met
21 Oct 2022
BoE XBRL Filing Manual (PDF)
A document to assist in creating XBRL instance documents for reporting against the BoE Statistics Taxonomy
25 Apr 2022
BoE statistics data point model (DPM) 1.3.0 (ZIP)
A folder containing two documents for defining all statistical reporting: annotated templates and a data dictionary defining all concepts used in statistical reporting
24 Oct 2022
BoE statistics validations 1.3.0 (XLSX)

Business validations for cross-checking data points within form AS and the suite of other statistical returns

View column O for a clearly worded description

24 Oct 2022

All statistical returns

Document Notes for all reporters Last updated
Classification of accounts guide (PDF)
Includes detailed guidance on how to classify counterparties plus country lists 24 Apr 2024
General notes and definitions (PDF) Includes an introduction to preparing returns and definitions of common terms 24 Apr 2024

Box codes and related documents

These documents were used as part of a previous reporting method (XML) and are no longer applicable to XBRL reporting. They are still available to help firms as we transition to the new ways of working.

This page was last updated 25 November 2024