Insolvency proceedings in the United Kingdom shifted materially in 2025. A series of amendments to UK insolvency legislation altered the procedural standing of creditors, modified the role of the administrator and liquidator, and changed how the restructuring plan interacts with dissenting creditor classes. For international companies holding claims against UK-incorporated entities, the window for protective action is narrower than it was twelve months ago.
The 2025 amendments to UK insolvency law took effect on a rolling basis from April 2025, with the final tranche operative from October 2025. They affect companies registered at Companies House with qualifying liabilities, their creditors, and any insolvency officeholder appointed under UK insolvency legislation. International creditors must submit a proof of debt in revised form within tightened statutory deadlines or risk losing voting rights at a creditors meeting.
This alert identifies the changes that matter most, maps which businesses are affected, and sets out the immediate steps required to protect creditor positions under the amended rules.
What changed – the key amendments and their effective dates
UK insolvency legislation was amended in two stages during 2025. The first stage, effective April 2025, restructured the ranking of certain preferential creditors. HMRC's status as a preferential creditor – already elevated by earlier reforms – was extended to cover a wider category of tax liabilities. This directly reduces the pool available to unsecured creditors in both administration and liquidation.
The second stage, operative from October 2025, introduced procedural changes to the restructuring plan mechanism. Courts – up to and including the High Court and, on appeal, the Supreme Court – can now apply the cross-class cram-down more readily. The threshold for creditor dissent to block a plan increased. A dissenting class can no longer prevent confirmation merely by demonstrating a formal objection. The court now examines whether dissenting creditors would be worse off in the relevant alternative – typically a liquidation. Practitioners note that this standard is applied with less deference to creditor estimates than before.
The FCA (Financial Conduct Authority) – formerly known as the FSA (Financial Services Authority) – updated its guidance on regulated entities in insolvency. Administrators handling regulated firms must now comply with enhanced notification obligations. Timelines for informing the FCA are shorter. Failure to comply triggers personal liability exposure for the insolvency officeholder.
Changes to proof of debt procedures require creditors to submit claims in a prescribed revised format. The deadline for submitting a proof of debt in administration proceedings has been reduced. In liquidation, the liquidator now has express power to reject late proofs without convening a creditors meeting to consider the rejection. This is a significant practical shift. Previously, creditors could rely on the meeting process as a check on the officeholder's decision. That check is now weaker.
For international companies, the interaction between these amendments and cross-border insolvency rules deserves attention. The UK's modified UNCITRAL model law regime – adopted through domestic insolvency legislation – continues to govern recognition of foreign proceedings. However, the amended domestic rules on creditor priority and proof deadlines apply regardless of whether the creditor is domiciled in the UK or abroad. Foreign creditors receive no extension of time.
Our detailed analysis of cross-border restructuring options for UK-connected entities is available through our insolvency and restructuring practice in the United Kingdom. This covers the full range of administration. Liquidation. Additionally, restructuring plan procedures under current law.
Who is affected – threshold criteria and compliance deadlines
The amendments apply broadly. Any creditor with an existing or contingent claim against a UK company in insolvency proceedings – or a company likely to enter proceedings – should treat these changes as immediately relevant.
The following categories face the most direct exposure:
- Unsecured trade creditors of UK companies with significant HMRC arrears, where HMRC's elevated preferential status will reduce recoveries in administration or liquidation
- Financial creditors participating in a restructuring plan where their class may be crammed down by the court under the revised threshold
- International creditors who have not yet filed a proof of debt in ongoing proceedings and face the shortened deadline
- Regulated entity creditors whose claims interact with FCA notification requirements
- Parent companies of UK subsidiaries approaching insolvency, where director liability exposure and the timing of filing at Companies House are now more precisely defined
The compliance deadline for proof of debt submissions in administration is now eight weeks from the date of appointment of the administrator, down from the previous twelve-week period in standard proceedings. In liquidation, the liquidator sets the bar date, but the revised rules allow a shorter default period. International creditors who rely on the longer legacy timelines will miss the deadline.
Directors of UK companies should note that the wrongful trading provisions in insolvency legislation were not amended. However. The earlier effective date for insolvency. linked to the expanded HMRC preferential status. means that the moment at which a director should have concluded insolvency was inevitable has, in practice, moved earlier. Legal advisers across the UK report that this is generating renewed scrutiny of historic board decisions.
To receive an expert assessment of your creditor position under the amended UK insolvency rules, contact us at info@ferrazwhitmore.com.
Immediate actions for international companies
The risk of inaction is concrete. A creditor who misses the proof of debt deadline in administration loses voting rights at any creditors meeting and may be excluded from distributions entirely. Companies should act on the following steps without delay.
First, audit all existing claims against UK-incorporated entities. Identify whether any counterparty has filed for administration or liquidation at Companies House since April 2025. The Companies House register is publicly accessible. An appointment of an administrator or liquidator triggers the shortened proof period immediately.
Second, review restructuring plan exposure. If your company holds debt in a UK group that is considering or has proposed a restructuring plan, obtain legal advice on your class designation. The amended cross-class cram-down rules mean that minority dissent is less effective than it was. Understanding your position before the plan is filed is materially more valuable than challenging it afterwards.
Third, update internal compliance procedures for FCA-regulated counterparties. If a UK counterparty is a regulated firm subject to FCA oversight. The administrator's enhanced notification obligations may affect the timing and structure of any claim you pursue. Coordinate with insolvency counsel early.
Fourth, assess HMRC priority exposure in your recoveries modelling. For any unsecured position, recalculate expected recoveries on the basis that HMRC's preferential status now absorbs a larger share of the available estate. In many cases, this will reduce projected unsecured distributions to a level that changes the economics of litigation versus settlement.
Fifth, verify that cross-border recognition of any foreign proceedings is formally in place. If your company is itself subject to insolvency proceedings in another jurisdiction and holds UK assets. Ensure that recognition under the UK's cross-border insolvency rules has been obtained. The amended domestic priority rules apply to the UK estate regardless of the foreign proceeding's outcome.
International businesses operating between the UK and other European jurisdictions should also consider how parallel proceedings in Portugal or elsewhere interact with these changes. Our alert on insolvency law amendments in Portugal sets out the comparable developments in that jurisdiction. For contentious matters that may involve parallel UK and European proceedings, our corporate disputes practice in the United Kingdom advises on coordination strategy across both systems.
About Ferraz & Whitmore
Ferraz & Whitmore is an international law firm based in Lisbon, advising business clients across 46 jurisdictions. Our insolvency and restructuring practice covers administration, liquidation, restructuring plans, and cross-border recognition proceedings under UK insolvency legislation, with particular depth in matters before the High Court. We combine English common law expertise with Portuguese civil law tradition to support international creditors, investors, and corporate groups managing distressed positions in the UK and across Europe. The firm's practitioners have advised on cross-border insolvency and restructuring matters in both common law and civil law systems, and our Lisbon base provides direct access to EU regulatory conditions alongside our UK-facing practice. Engaging a lawyer in the United Kingdom with cross-border experience matters when creditor rights span multiple legal systems. and that dual-tradition capability is central to what Ferraz &. Whitmore provides as an international law firm. To discuss your position under the amended UK insolvency rules, contact us at info@ferrazwhitmore.com.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. Ferraz & Whitmore assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@ferrazwhitmore.com.
Author: Edward Whitmore
Author title: Senior Partner, Dispute Resolution
Author bio: Edward Whitmore is a Senior Partner at Ferraz & Whitmore specialising in international commercial arbitration, enforcement of foreign judgments, and complex litigation. With a background spanning English common law and civil law systems, he represents multinational clients in high-value cross-border disputes.
Published: February 19, 2026