Public Interest Entity (PIE) Auditor Registration
5 minute read
Audit firms in scope of the PIE Auditor Registration Regulations must be registered with the FRC to undertake PIE audit work. The PIE auditor approval and registration process (‘PIE Auditor Registration’) is separate from, and additional to, the Recognised Supervisory Body audit registration process for statutory auditors (which continues to apply).
The sections below set out the process and documents required to apply for registration with the FRC, together with certain disclosures in relation to existing Conditions, Undertakings, waivers and suspensions.
PIE Auditor Register
PIE Auditor Registration
If an audit firm or Responsible Individual (RI) wishes to come onto or off of the PIE Auditor Register, please get in contact via [email protected].
Audit firms and RIs must not undertake PIE audit work unless they are registered with the FRC, as this would be in breach of the PIE Auditor Registration Regulations.
PIE Auditor Registration Regulations and Guidance 2026
The Regulations will be made on 7 April 2026 (at which time the signed version will be published), and the updated Regulations and Guidance come into effect from 20 April 2026.
| Name | Public Interest Entity (PIE) Auditor Registration Regulations (April 2026) |
|---|---|
| Publication date | 31 March 2026 |
| Type | Scheme and regulation |
| Notes | Effective from 20 April 2026 |
| Format | PDF, 353.4 KB. View HTML version |
| Name | PIE Auditor Registration Guidance (April 2026) |
| Publication date | 31 March 2026 |
| Type | Guidance |
| Notes | Effective from 20 April 2026 |
| Format | PDF, 519.2 KB. View HTML version |
PIE Auditor Registration Regulations and Guidance 2022
| Name | Public Interest Entity (PIE) Auditor Registration Regulations (August 2022) |
|---|---|
| Publication date | 18 August 2022 |
| Type | Scheme and regulation |
| Format | PDF, 1.3 MB. View HTML version |
| Name | PIE Auditor Registration Guidance (November 2022) |
| Publication date | 10 November 2022 |
| Type | Guidance |
| Format | PDF, 381.0 KB. View HTML version |
Audit Firm Restructuring and Governance/Ownership changes
Restructuring is a broad concept and can include changes to ownership, such as the listing of a firm on a public market or the investment of private capital, as well as internal reorganisation or changes to a firm’s governance arrangements. In most cases, a restructuring or governance/ownership change will constitute a Relevant Change under Part 15 of the PIE Auditor Registration Regulations (the “Regulations”). A Relevant Change may include changes to ownership, control, governance, or other matters that could affect the firm’s eligibility for registration.
It is important that firms read both the Regulations and accompanying Guidance document to understand the FRC’s expectations regarding how and when firms need to notify governance/ownership/restructuring changes to the FRC and the time required by the FRC to consider the notifications. Firms must formally notify Relevant Changes to the Registration team at [email protected] in accordance with the Regulations. Notifications to other individuals or teams at the FRC will not constitute a notification of a Relevant Change.
PIE Auditor Registration Internal Review and Appeals - Supporting Documents
| Name | Form for requesting an Internal Review |
|---|---|
| Publication date | 2 December 2022 |
| Format | DOCX, 60.4 KB |
| Name | Form for requesting an Appeal against the outcome of an Internal Review |
| Publication date | 2 June 2023 |
| Format | DOCX, 55.7 KB |
| Name | Tribunal & Appeal Panel Statement of Independence Guidance Notes |
| Publication date | 23 September 2022 |
| Type | Guidance |
| Format | PDF, 1.5 MB. View HTML version |
| Name | Convening Tribunals and Appeal Tribunals (2022) |
| Publication date | 23 September 2022 |
| Format | PDF, 1.5 MB. View HTML version |
Further queries on PIE Auditor Registration can be sent to [email protected].
PIE Auditor Registration Data - Registered firms and Responsible Individuals (RIs)
Details of the total number of PIE registered audit firms provided below is taken from the most recent data points.
| Firms | 30 April 2024 | 31 October 2024 | 30 April 2025 | 31 October 2025 |
|---|---|---|---|---|
| Twelve largest firms | 12 | 12 | 12 | 12 |
| Other registered firms | 25 | 25 | 24 | 25 |
| Total firms registered | 37 | 37 | 36 | 37 |
PIE Auditor Registration Conditions, Undertakings, waivers and suspensions
The PIE Auditor Registration regime allows the FRC to impose or agree measures on the registration of firms where we have quality concerns or where firms are not in compliance with one or more of the Registration Requirements. The total number of firms with Conditions and/or Undertakings can be seen in the table below.
| Firms |
30 April 2024 |
31 October 2024 |
30 April 2025 | 31 October 2025 |
|---|---|---|---|---|
| Total PIE audit firms registered | 37 | 37 | 36 | 37 |
| PIE audit firms with Conditions* | 9 | 9 | 9 | 10 |
| PIE audit firms with Undertakings only | 4 | 5 | 5 | 6 |
| % of PIE audit firms with Conditions and/or Undertakings | 35% | 38% | 39% | 43% |
* The Firms with Conditions row includes firms that have an Undertaking as well as a Condition.
Some examples of Conditions which could be imposed include:
- To require FRC approval prior to accepting new PIE audits, meaning that we can limit the growth of a firm’s PIE audit portfolio.
- To improve aspects of a firm’s system of quality management. Conditions of this nature help a firm understand where it needs to improve. We support a firm through this process by reviewing and providing constructive feedback on the actions it is taking.
In September 2025, 13 firms joined the FRC’s new Scalebox initiative to build capability and support growth, designed to support smaller firms as they enhance audit quality and their System of Quality Management (SoQM). Where any of these firms had Conditions or Undertakings attached to their registration, the reporting requirements have been paused, except in particular risk areas, to give these firms capacity to concentrate on improvements to their SoQM.
The FRC’s registration team works closely with the supervisor and inspection teams in monitoring how firms are responding to Conditions and Undertakings. Such firms are subject to enhanced supervision plans and may also be subject to accelerated inspection.
The Regulations specify various measures that the FRC can impose or agree with firms and/or RIs to safeguard audit quality. In each case, the FRC will also consider whether it is in the public interest to publish relevant information. Conditions and/or Undertakings have been applied to a small number of RIs, where we have significant concerns over audit quality.
Decisions as to publication of the matters set out above will be considered on a case-by-case basis. The FRC will balance the public interest with any detriment that may be caused to the individual, the audit firm or a PIE audit engagement. Further details are set out in the Guidance and the publication policy (in Annex 1 of the Guidance).
Consequently, any decision to not publish, should remain confidential between the FRC and the individual and/or audit firm, unless informing another party is expressly included within the measure imposed.
An example of a statement on confidentiality included within an agreed Undertaking with an audit firm:
“The FRC has considered whether it is in the public interest for the above Undertakings to be published and has concluded that it is not. The agreed Undertakings should therefore be treated as, and kept, strictly confidential. You may only disclose the nature or existence of the Undertakings in accordance with paragraph 17.7 of the PIE Auditor Regulations.”
Where the decision is taken to not publish, stakeholders can have confidence that this has been carefully evaluated by the FRC. As a result, firms and RIs should not communicate any details of measures that are stated as confidential. If asked by a third party, such as an Audit Committee in a tendering situation, a firm and/or RI (whether they are subject to a confidential measure or not) should direct the third party to the FRC’s website.
When a publicity decision is made, an entry will be made on the PIE Auditor Register (‘PAR’) to indicate the existence of a measure and its duration. Each Condition, Undertaking, waiver and/or suspension that has been published on the PAR will be removed from the PAR on the expiry of the relevant Condition, Undertaking, waiver and/or suspension (as appropriate), or as soon as reasonably practicable after such expiry.
To date we have not published details of individual Conditions or Undertakings applied but we may do so in future based on our assessment of the public interest.
A link to any currently published measures can be found on the PIE Auditor Register Firms List (please refer to the “status” column).
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