Becoming a director of a UK limited company is straightforward to do. Understanding what it actually means is a different matter. The Companies Act 2006 sets out seven general duties that apply to every director from the moment of appointment, and the consequences of not following them range from personal financial liability to criminal prosecution and disqualification. On top of the legal duties, 2026 has introduced significant changes to how directors must interact with Companies House, including a mandatory identity verification deadline, new filing requirements, and the closure of the old joint filing service. This guide covers the full picture: your legal duties, your ongoing compliance obligations, and what happens if you miss either.
The Legal Duties
The 7 duties every UK company director must understand
Under the Companies Act 2006, every director of a UK limited company owes seven general duties to the company. These duties apply whether you are a sole director of a small Ltd or part of a board of a large private company. They apply even if you have delegated day-to-day management to employees or advisors. The responsibility does not transfer with the delegation.
Act within your powers
You must follow the company's constitution and its Articles of Association. These set out what powers you have and what they can be used for. Exercising a power for a purpose not authorised by the Articles, even with good intentions, is a breach of this duty.
Promote the success of the company
You must act in the way you consider, in good faith, would be most likely to promote the success of the company for the benefit of its members as a whole. This requires considering the long-term consequences of decisions, the interests of employees, relationships with suppliers and customers, the company's reputation, and its impact on the community and environment.
Exercise independent judgement
You must make your own decisions. You can take advice from lawyers, accountants, or other directors, but you cannot simply do what you are told by shareholders, advisors, or anyone else. The final judgement must be yours, applied independently and in good faith.
Exercise reasonable care, skill and diligence
The standard applied is that of a reasonably diligent person with both the general knowledge and experience that could be expected of anyone in your role, and the specific knowledge and experience that you personally possess. If you have professional expertise relevant to the company, you are held to that higher standard.
Avoid conflicts of interest
You must avoid any situation where you have, or could have, a direct or indirect interest that conflicts with the interests of the company. This includes situations that might arise, not just ones that have already materialised. Conflicts can be authorised by the other directors or shareholders, but they must be disclosed and approved before they arise, not after.
Not accept benefits from third parties
You must not accept benefits, including gifts, hospitality, or any other advantage, from third parties that are given because of your position as a director or for doing or not doing anything as a director. The test is whether acceptance of the benefit could reasonably be regarded as likely to give rise to a conflict of interest.
Declare interests in proposed transactions
If you are in any way, directly or indirectly, interested in a proposed transaction or arrangement with the company, you must declare the nature and extent of that interest to the other directors before the company enters into it. This applies even if you think the other directors already know, or if the interest is minor.
The Companies Act 2006 duties apply to all directors of all UK limited companies from the moment of appointment. A director who has stepped back from daily operations, who has delegated management entirely, or whose company is currently dormant remains fully subject to all seven duties. Ignorance of the duties is not a defence.
When the Company is in Financial Difficulty
What changes if your company becomes insolvent
The seven duties described above are owed to the company and therefore, in practice, to its shareholders. If the company becomes insolvent or approaches insolvency, the duties shift. At that point, directors must prioritise the interests of creditors over shareholders. Continuing to trade while insolvent, or taking actions that benefit yourself or shareholders at the expense of creditors, can result in personal liability for the company's debts and potential disqualification.
The key practical obligation when a company is in financial difficulty is to take proper professional advice promptly. Directors who act on advice from a licensed insolvency practitioner, document their decision-making, and can demonstrate they acted in the creditors' best interests have significantly better protection than those who delay or avoid the issue.
If a director is found to have acted in breach of their duties, particularly in cases of insolvency, the Insolvency Service can apply to have them disqualified from acting as a director for between 2 and 15 years. Disqualification is also triggered by persistent failure to file statutory documents and is not reserved for fraud cases alone. A disqualified person cannot be a director of any UK company, act as an insolvency practitioner, or be involved in forming, managing, or promoting a company without court permission.
Filing and Reporting Duties
Your ongoing compliance obligations as a director in 2026
Beyond the legal duties owed to the company, directors are personally responsible for ensuring the company meets its statutory filing and reporting obligations with Companies House and HMRC. These are not optional administrative tasks. Failure to file on time carries automatic penalties, and persistent failure is a criminal offence.
Three core filings apply to every UK limited company every year:
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Every 12 months +14 days
Confirmation statement (CS01)
Filed with Companies House, the confirmation statement confirms that the information on the public register is accurate and up to date, including directors, shareholders, registered office, and persons with significant control (PSCs). It must be filed within 14 days of the statement date, which falls on the anniversary of incorporation. Even if nothing has changed, it must still be filed every year. The filing fee is £50. Failure to file is a criminal offence and can lead to the company being struck off the register.
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9 months after year end
Annual accounts
Statutory accounts must be filed with Companies House within 9 months of your company's accounting reference date (ARD). For a company with a 31 December year end, accounts are due by 30 September the following year. First accounts are due 21 months after incorporation. From 1 April 2026, annual accounts can no longer be filed through the old Companies House WebFiling service. All accounts must now be filed using commercial software that supports iXBRL (Inline eXtensible Business Reporting Language) format. Late filing penalties start at £150 for accounts up to one month late and escalate to £1,500 for accounts more than six months late, with penalties doubled in consecutive years.
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12 months after year end
Corporation Tax return (CT600)
The Corporation Tax return must be filed with HMRC within 12 months of the end of the accounting period. However, Corporation Tax itself must be paid within 9 months and 1 day of the year end. The common mistake is confusing the payment deadline with the filing deadline: the tax is due before the return. From 1 April 2026, the joint HMRC and Companies House filing service (CATO) has closed. Corporation Tax returns must now be filed separately with HMRC using commercial software. Late payment interest runs at 7.75% from January 2026.
1Office UK handles annual accounts, Corporation Tax returns, and confirmation statements for UK limited companies.
Reporting Changes
What changes must be reported to Companies House and when
A confirmation statement filed once a year is not enough. Certain changes to the company must be reported to Companies House as and when they happen, within set time limits. Directors are personally responsible for ensuring these notifications are made correctly and on time.
| Change | Deadline to notify Companies House | How |
|---|---|---|
| New director appointed | 14 days | AP01 form. New directors must have verified their identity before appointment from 18 November 2025. |
| Director resignation or termination | 14 days | TM01 form filed with Companies House. |
| Director's service address change | 14 days | CH01 form. The service address is publicly visible on the register. |
| Change of registered office | 14 days | AD01 form. The new address must be a physical UK address. PO boxes are not accepted. |
| New shareholder or share transfer | Next confirmation statement or sooner | Share register must be updated. Material changes reported on the confirmation statement. |
| New or changed PSC | 14 days to update register; 28 days to notify Companies House | PSC register must be maintained. PSC01 or PSC04 filed with Companies House. |
| Change of company name | As soon as approved by Companies House | NM01 form with fee of £20 (online). Requires special resolution. |
| Change of accounting reference date | Before the current ARD | AA01 form. Extensions are limited; you cannot extend accounting periods repeatedly. |
Directors also have a duty to keep their own personal information on the register up to date. If a director's service address changes, the notification obligation rests with the company, not just the individual. If a director uses their home address on the register, they can apply to Companies House to have it suppressed from public view.
2026 Changes Every Director Must Know
What has changed for UK directors in 2026
Three significant changes have come into effect in 2026 that every UK company director needs to be aware of. These are not minor administrative updates. Each one has direct practical consequences for how you comply with your obligations.
1. Identity verification is now mandatory
From 18 November 2025, all UK company directors and persons with significant control (PSCs) must verify their identity with Companies House under the Economic Crime and Corporate Transparency Act 2023. New directors must verify before their appointment can be registered. Existing directors appointed before 18 November 2025 must verify by the date of their company's next confirmation statement, or by 18 November 2026 at the absolute latest.
Verification is done through GOV.UK One Login, which is free and takes around 10 to 20 minutes if you have a biometric passport or UK driving licence. Directors without a suitable photo ID, or who prefer not to use the online service, can verify through an Authorised Corporate Service Provider (ACSP) such as 1Office. Once verified, you receive a personal code that must be included on your company's confirmation statement. If any director or PSC has not verified, the confirmation statement cannot be filed.
If your company's confirmation statement falls due in June 2026, your effective identity verification deadline is before that date, not November. One unverified director blocks the entire company from filing. If you have not yet verified, act now through GOV.UK One Login or contact 1Office for assistance as a registered ACSP.
1Office is a registered ACSP with Companies House and can verify directors and PSCs on your behalf.
2. The joint filing service has closed
The joint HMRC and Companies House filing service (CATO) closed on 31 March 2026. This service allowed companies to file annual accounts and Corporation Tax returns simultaneously through a single submission. That route no longer exists. From 1 April 2026, accounts must be filed separately with Companies House using commercial software that supports the iXBRL format, and Corporation Tax returns must be filed separately with HMRC, also using commercial software. If you or your accountant previously used the WebFiling route or the CATO service, you need to have confirmed a new filing arrangement is in place before your next accounts are due.
3. Companies House fees have increased
From 1 February 2026, Companies House increased its fees as part of its ongoing reform programme. Digital incorporation now costs £100 (previously £50). The annual confirmation statement filing fee is now £50 (previously £34). Same-day incorporation is available for £78 as an additional priority service. These fees are paid to Companies House directly and are separate from any professional fees charged by a formation agent or accountant.
Public Register
What personal information is publicly visible on the Companies House register
One of the important things to understand when becoming a director is what information becomes publicly available. Companies House is a public register, and anyone can search for your company and see certain details about its directors, shareholders, and filings for free.
The following director information is publicly visible on the Companies House register:
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Full name. Your first name and surname are publicly visible. A company director's name cannot be suppressed from the public register, unlike some residential address information.
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Month and year of birth. Your full date of birth is partially protected, but the month and year are visible publicly. The day of birth is shown only to authorised parties.
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Service address. Every director must provide a service address (also called a correspondence address) which is publicly visible. This does not have to be your home address. Many directors use a virtual business address service to keep their home address off the register.
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Nationality and country of residence. Both are visible on the public register.
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Date of appointment. The date you became a director is publicly visible, as is the date of any resignation.
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All other directorships. Any other UK company directorships you currently hold or have previously held are linked to your name on the register and are publicly searchable.
If a director uses their home address as their service address, they can apply to Companies House to have it suppressed from public view. This is a separate application and does not happen automatically. If you want to keep your home address private from the outset, providing a registered service address at the point of appointment is simpler and more reliable. 1Office provides a director service address as part of its UK formation packages.
1Office provides a London registered address and director service address for UK limited companies.
Know the Rules
Your responsibility to know the law that applies to your company
One of the less-discussed but practically important obligations of being a director is the duty to know which laws and regulations apply to your specific company and to ensure the company complies with them. The Companies Act 2006 sets the baseline, but many industries carry additional regulatory requirements that sit entirely on top of it.
This is not a passive obligation. You cannot rely on others to flag relevant legal changes unless you have actively put monitoring systems in place. You are responsible for ensuring compliance, even if you have delegated the day-to-day work to employees or a professional firm. Companies House publishes a Director Information Hub with practical guidance for directors, and signing up for alerts from HMRC, Companies House, and relevant sector regulators is basic risk management for any director.
Industry-specific examples include: companies operating goods vehicles above a certain weight require a vehicle operator's licence; financial services firms require FCA authorisation; certain professional service businesses require registration with professional bodies; data controllers must register with the ICO under UK GDPR. The obligation to know which of these apply to your business, and to ensure compliance, rests with the directors.
Non-Resident Directors
Being a director of a UK company if you live outside the UK
UK company law places no requirement on directors to be UK citizens or UK residents. Non-UK residents are appointed as directors of UK limited companies every day, including through 1Office's formation service for international clients. But non-resident directors carry the same duties and obligations as resident ones, and in some areas face additional practical considerations.
The mandatory identity verification requirement introduced in November 2025 applies to all directors regardless of where they live. Non-resident directors without a biometric passport may find the GOV.UK One Login verification route more complex, and may need to use an ACSP route instead. 1Office, as a registered ACSP, can complete identity verification for non-resident directors and PSCs without requiring travel to the UK.
Non-resident directors also need to be mindful of permanent establishment risk if they are regularly making key business decisions for the UK company from another country. If another jurisdiction considers the effective management of the company to be taking place there, that country may assert a right to tax the company. This is a tax treaty issue rather than a Companies Act issue, but it is one that non-resident directors should discuss with a tax advisor if the company's management arrangements are anything other than straightforward.
Every UK limited company must have a registered office address in the UK that is a physical address. PO boxes are not accepted. The address is publicly visible on the Companies House register. Directors who are not UK residents must ensure their company has a compliant UK registered address. 1Office provides a London registered address for all UK company formation packages.
FAQ
Frequently asked questions about being a UK company director
What are the main duties of a UK company director?
Under the Companies Act 2006, directors have seven general duties: to act within their powers, to promote the success of the company, to exercise independent judgement, to exercise reasonable care and skill, to avoid conflicts of interest, not to accept benefits from third parties, and to declare interests in proposed transactions. These duties apply from the moment of appointment and cannot be contracted out of or waived.
What happens if a director does not meet their obligations?
The consequences depend on which obligation has been breached. Failure to file statutory documents carries automatic financial penalties and, if persistent, criminal prosecution and director disqualification for up to 15 years. Breach of the general duties owed to the company can result in personal financial liability, being required to repay profits made from the breach, or the voiding of contracts entered into in breach. In insolvency situations, breach of duty can lead to personal liability for the company's debts.
Do the duties apply if I did not know I was a director?
The Companies Act 2006 includes shadow directors and de facto directors within its scope. A shadow director is someone whose instructions the board is accustomed to following. A de facto director is someone who acts as a director without being formally appointed. Both are subject to the same duties as formally appointed directors, regardless of whether they knew they were in a directorship role.
When does the identity verification deadline apply to existing directors?
Existing directors appointed before 18 November 2025 must verify their identity before their company's next confirmation statement is filed, or by 18 November 2026 at the absolute latest. In practice, your real deadline is your next confirmation statement date, which may be months before November 2026. If any director has not verified, the confirmation statement cannot be filed at all, which risks the company being struck off the register.
Can I be a director of a UK company if I live outside the UK?
Yes. UK company law places no residency or nationality requirements on directors. Non-resident and non-UK-national directors are common. The same duties and filing obligations apply regardless of where the director lives. The company must have a UK registered office address, but that address can be provided by a formation agent like 1Office. Non-resident directors who have not yet completed identity verification can do so through 1Office as a registered ACSP, without needing to travel to the UK.
What changed about annual accounts filing from April 2026?
The joint HMRC and Companies House filing service (CATO) closed on 31 March 2026. From 1 April 2026, annual accounts must be filed separately with Companies House using commercial software that supports iXBRL format. The old WebFiling route is no longer available for any type of annual accounts, including dormant company accounts. Corporation Tax returns must also now be filed separately with HMRC using commercial software. Directors who previously filed accounts themselves through WebFiling will now need to use commercial software or appoint a professional accountant.
What is a person with significant control (PSC) and do they have the same obligations as directors?
A PSC is anyone who owns more than 25% of a company's shares or voting rights, has the right to appoint or remove the majority of the board, or otherwise exercises significant influence or control over the company. PSCs must be registered at Companies House and must now also complete identity verification. PSCs who are also directors follow the director timeline for verification. PSCs who are not directors must verify within 14 days of the start of their birth month as shown on the Companies House register.
Need support with your UK company compliance?
1Office handles annual accounts, Corporation Tax returns, identity verification, registered addresses, and all Companies House filings for UK limited companies.
