Share classes in a UK limited company: ordinary, preference, and alphabet shares explained

Most UK limited companies start life with a single class of ordinary shares. The founder subscribes for one share at £1, Companies House processes the incorporation, and the share structure never gets a second thought — until it has to. A co-founder joins and wants equity without equal voting rights. An angel investor wants downside protection. A spouse holds shares but the couple want to split dividends in a tax-efficient ratio. Suddenly the single-class structure that felt perfectly adequate is a constraint, and the founder is Googling "alphabet shares" at midnight.

Share classes are one of the most powerful — and most misunderstood — tools in UK company law. Used well, they let you tailor voting rights, dividend entitlements, and capital distribution to match the commercial reality of your business. Used badly, or not at all, they leave founders locked into structures that create tax inefficiencies, governance headaches, and investor friction down the line.

This guide explains the share classes available to a UK private limited company, when each one is useful, how to create new classes by amending your articles of association, and the Companies House filings that follow. If you already know what you need and want it done properly, Filing HQ's share issuance service handles the articles amendment, board resolution, SH01 filing, and share certificates as a single workflow.

What are share classes and why do they matter?

A share class is a category of shares that carry a defined set of rights. Those rights typically fall into three buckets:

• Voting rights — whether the shareholder can vote on company resolutions, and how many votes each share carries.
• Dividend rights — how profits are distributed. Some classes receive dividends before others; some receive a fixed percentage; some receive nothing at all.
• Capital rights — what happens on a winding up or sale of the company. Some classes get their money back first; others share in the surplus; some are capped.

When a company has only one class of share, every shareholder has identical rights in proportion to their holding. That works when one person owns everything, but it breaks down the moment two or more people hold shares with different expectations. Share classes solve that by attaching different bundles of rights to different groups of shares — without requiring separate legal agreements for each scenario.

The rights attached to each class are defined in the company's articles of association. If the articles are silent on a right, the default position under the Companies Act 2006 and common law applies. Getting the articles right is critical — a poorly drafted share class can create ambiguity that surfaces at the worst possible moment: during a funding round, a shareholder dispute, or a company sale.

The main types of shares in a UK limited company

UK company law does not prescribe a fixed list of share classes. You can create any class with any combination of rights, as long as the articles of association define them clearly. That said, the following classes cover the vast majority of real-world scenarios.

Ordinary shares

Ordinary shares are the default. When a company is incorporated with "1 ordinary share of £1" — the standard formation structure — these are what you get. Ordinary shares typically carry:

• One vote per share on all shareholder resolutions
• Equal dividend rights — when the directors declare a dividend, ordinary shareholders receive it in proportion to their holdings
• Equal capital rights — on winding up, ordinary shareholders share in whatever surplus remains after creditors and any preferential classes are paid

For a sole-founder company or a company where all shareholders are on equal terms, ordinary shares are usually sufficient. Problems arise when you need different shareholders to have different rights — that is where the other classes come in.

Preference shares

Preference shares carry a preferential right — usually to dividends, capital on winding up, or both — over ordinary shareholders. The most common form is a fixed-rate dividend: the preference shareholder receives, say, 5% of the nominal value of their shares before any dividend is paid to ordinary shareholders.

Key characteristics:

• Priority on dividends. Preference dividends are typically paid first. If the company cannot afford to pay a dividend to everyone, the preference shareholders get theirs before ordinary shareholders get anything.
• Cumulative or non-cumulative. Cumulative preference shares accrue unpaid dividends — if the company skips a year, the arrears carry forward. Non-cumulative shares do not: if the dividend is not declared in a given year, it is lost.
• Priority on capital. On winding up, preference shareholders usually receive their capital back (often at par) before ordinary shareholders. Whether they also share in any surplus depends on the articles — many preference shares are "non-participating," meaning their return is capped.
• Limited or no voting rights. Preference shares often carry no vote, or voting rights only in specific circumstances (such as when their dividend is in arrears). This is negotiated in the articles.

When they are useful: preference shares are common in early-stage investment. An angel investor puts in £50,000 and receives preference shares with a fixed 6% dividend and a liquidation preference — meaning they get their £50,000 back before the founders see anything if the company winds up. The founders retain ordinary shares with full voting control, and the investor has downside protection without needing a complex shareholder agreement to enforce it.

Alphabet shares (A, B, C ordinary shares)

Alphabet shares are not a legal category defined by the Companies Act — they are simply multiple classes of ordinary share, each designated by a letter (A Ordinary, B Ordinary, C Ordinary, and so on), with different dividend rights attached to each class.

The classic use case is dividend splitting for tax efficiency. Consider two directors who are also spouses, each holding 50 ordinary shares. If the company pays a £20,000 dividend, each receives £10,000 — regardless of whether one spouse is a higher-rate taxpayer and the other has unused personal allowance. With alphabet shares:

• Director A holds 50 A Ordinary shares
• Director B holds 50 B Ordinary shares
• The articles permit the directors to declare dividends on each class independently
• The company declares a £5,000 dividend on the A shares and a £15,000 dividend on the B shares — routing more of the profit to the lower-rate taxpayer

A word of caution: HMRC is fully aware of this structure. The settlements legislation (Income Tax (Trading and Other Income) Act 2005, Part 5, Chapter 5) can apply where one spouse has arranged to divert income to the other. The key case is Arctic Systems (Jones v Garnett [2007] UKHL 35), which established that the spousal exemption in s. 626 ITTOIA 2005 can protect ordinary share dividends — but the protection has limits, and HMRC has continued to challenge aggressive dividend-splitting arrangements. Take professional tax advice before implementing alphabet shares purely for income shifting between spouses or family members.

Alphabet shares are also used beyond tax planning. A company might issue C Ordinary shares to an employee share scheme with restricted dividends but full voting rights, or D Ordinary shares to a silent investor with enhanced dividends and no voting rights.

Redeemable shares

Redeemable shares can be bought back by the company at a future date, either at the company's option, the shareholder's option, or both. They are governed by sections 684–689 of the Companies Act 2006.

Key rules:

• A company can only issue redeemable shares if the articles authorise it.
• A company must have at least one non-redeemable share in issue at all times — you cannot make every share redeemable.
• Redemption must be funded from distributable profits or the proceeds of a fresh issue of shares made for the purpose of the redemption (s. 687 CA 2006). Private companies can also redeem out of capital under ss. 709–723 if certain conditions are met.
• Redeemed shares are cancelled — they do not become treasury shares in a private company.

When they are useful: redeemable shares provide a built-in exit mechanism. An investor who wants a defined exit route might take redeemable preference shares — the company buys them back after three years at par plus accrued dividends. They are also used in management incentive schemes: a departing director's shares can be redeemed by the company without needing a buyer.

Deferred shares

Deferred shares carry minimal economic rights. They typically receive no dividends (or only after ordinary shareholders have received a large specified amount) and rank last on a winding up — often behind even ordinary shareholders. They usually carry no voting rights.

When they are useful: deferred shares are a tool for restructuring. A common scenario is converting a departing founder's ordinary shares into deferred shares — the leaver no longer benefits economically from the company, but the shares are not cancelled (avoiding the complexity and cost of a share buyback). They are also used in bonus share issues where the company needs to maintain control in the hands of specific shareholders.

Non-voting shares

Exactly what they sound like: shares that carry dividend and capital rights but no voting rights. These are useful when you want to give someone an economic stake in the company without giving them a say in how it is run — employee share schemes, family gifts, or passive investors.

Non-voting shares can be structured as a separate class within the articles. Note that certain statutory rights (such as the right to petition for unfair prejudice under s. 994 CA 2006) attach to all shareholders regardless of voting rights, so non-voting does not mean non-protected.

How to create a new share class: the step-by-step process

Creating a new share class is not a one-click filing. It involves amending the company's articles of association, passing the correct resolution, issuing the shares, and notifying Companies House. Here is the sequence.

Step 1: Check your current articles of association

Your articles of association define the share classes your company can issue and the rights attached to each. If you are using the Model Articles (the default for companies incorporated since 1 October 2009), they provide broad authority for the directors to allot shares — but they do not automatically create multiple share classes. You will need to amend the articles to define the new class and its rights.

If your company has bespoke articles (common for investor-backed companies), check whether they already provide for the share class you want. Some articles include a mechanism for the directors to create new classes by board resolution alone. Most require a shareholder resolution.

Step 2: Pass a special resolution to amend the articles

Amending the articles of association requires a special resolution — passed by at least 75% of votes cast (s. 21 CA 2006). For a sole-founder company this is straightforward; for a company with multiple shareholders, you need broad agreement.

The resolution should specify:

• The name of the new share class (e.g. "A Ordinary Shares of £1 each")
• The rights attached: voting, dividend, capital distribution, and any special conditions
• Whether existing shares are being reclassified or new shares are being created

A copy of the special resolution must be filed with Companies House within 15 days of being passed (s. 30 CA 2006). The amended articles must also be filed — Companies House needs to hold a current copy of the articles on the public record.

Step 3: Pass a board resolution to allot the new shares

Once the articles permit the new class, the directors pass a board resolution to allot shares of that class to the intended recipients. The resolution should record:

• The number and class of shares being allotted
• The price per share (nominal value plus any premium)
• The name and address of each allottee
• The date of allotment

If the company has more than one shareholder, consider whether pre-emption rights apply. Under s. 561 CA 2006, existing shareholders have a statutory right to be offered new shares in proportion to their existing holdings before the shares are offered to anyone else. This right can be disapplied by a special resolution (s. 569–571), but it must be addressed — ignoring pre-emption rights makes the allotment voidable.

Step 4: File form SH01 with Companies House

Within one month of allotting new shares, file a return of allotment (form SH01) with Companies House. This form records the number, class, and nominal value of the shares allotted, plus the amount paid up. Filing online is free.

If you also passed a special resolution to amend the articles (Step 2), file the resolution and updated articles alongside the SH01. Filing HQ handles both filings together to keep the public record consistent. See our full guide to issuing shares for a detailed walkthrough of the SH01 process.

Step 5: Issue share certificates and update statutory registers

Within two months of allotment, each new shareholder must receive a share certificate stating the number and class of shares held (s. 769 CA 2006). Update the register of members to reflect the new shareholdings.

If a new shareholder holds more than 25% of shares or voting rights, they are a person with significant control (PSC) and must be notified to Companies House within 14 days using form PSC01. Since 18 November 2025, every new PSC must also complete identity verification under the ECCTA before the notification can be filed. Filing HQ's PSC notification service sequences the verification and filing together.

Reclassifying existing shares

Sometimes you do not need to issue new shares — you need to convert existing shares from one class to another. This is common when introducing alphabet shares: the company's existing 100 ordinary shares are redesignated as 50 A Ordinary and 50 B Ordinary, with different dividend rights attached.

Reclassification (also called redesignation or conversion) requires:

1. A special resolution amending the articles to define the new classes and their rights.
2. Consent of affected shareholders — if the variation of rights provisions in the articles apply (ss. 630–635 CA 2006), the holders of each affected class must consent.
3. Filing the special resolution and amended articles with Companies House within 15 days.
4. New share certificates reflecting the updated class designation.
5. Updated statutory registers — the register of members must reflect the new class for each holding.

No SH01 is required for a pure reclassification (no new shares are being allotted). However, the next confirmation statement must accurately reflect the updated share capital structure — getting this wrong is one of the most common errors we see.

Variation of class rights

Changing the rights attached to an existing share class — for example, removing voting rights from B Ordinary shares, or changing a preference dividend rate — is a variation of class rights governed by ss. 630–635 CA 2006.

The process depends on what the articles say. Under the statutory default:

• The holders of that class must consent — either by a special resolution of the class (a class meeting) or by written consent of holders of at least 75% in nominal value of the shares of that class.
• Dissenting shareholders holding at least 15% of the shares of the class (who did not vote in favour) can apply to the court to have the variation cancelled within 21 days (s. 633 CA 2006).

This is not a process to take lightly. Varying class rights without proper consent is a breach of the Companies Act and can be challenged in court. If you are restructuring share classes, take professional advice to ensure the correct procedure is followed for your specific articles.

Common mistakes when setting up share classes

1. Not amending the articles before issuing shares of a new class. The articles are the legal foundation. Issuing shares of a class that is not defined in the articles creates an allotment that may be challenged as invalid. Always amend first, allot second.
2. Vague rights definitions. "A Ordinary shares shall have enhanced dividend rights" is not a rights definition. The articles must specify exactly what "enhanced" means — a fixed rate, a multiple of ordinary dividends, first priority, or something else entirely. Ambiguity breeds disputes.
3. Ignoring pre-emption rights. Unless properly disapplied, existing shareholders have a statutory right to be offered new shares first (s. 561 CA 2006). Skipping this step makes the allotment voidable and poisons future investment rounds.
4. Failing to file the special resolution and updated articles. The resolution must be filed within 15 days, and the updated articles must accompany it. Companies House will not have a record of your new share class until this is done — which means it will not appear on the public register, confusing banks and investors.
5. Forgetting the PSC implications. A new shareholder with more than 25% of any class of shares may be a PSC — and since ECCTA, every new PSC must complete identity verification before the PSC01 can be filed. The 14-day filing clock for PSC notifications does not wait for you to discover this requirement.
6. Using alphabet shares for tax avoidance without professional advice. HMRC's settlements legislation can apply to dividend-splitting arrangements between connected persons. The Arctic Systems spousal exemption has limits, and HMRC actively challenges structures that lack genuine commercial substance beyond tax reduction.

Share classes and your confirmation statement

Your annual confirmation statement must accurately report the company's statement of capital — including every share class, the number of shares in each class, their nominal value, the amount paid up, and the rights attached. If you have created new share classes or reclassified existing shares during the review period, this information must be updated when the confirmation statement is filed.

The confirmation statement filing fee is £50 online (£110 on paper). It must be filed every 12 months from incorporation, with a 14-day filing window after the review period ends — even if nothing has changed. Filing HQ's confirmation statement service includes the fee and ensures the share capital section matches your current structure.

Share classes in the context of investment rounds

Fundraising is where share classes come into their own. A typical seed-round structure might look like this:

• Ordinary shares — held by the founders. Full voting and dividend rights.
• Seed preference shares — held by the investor. Carries a 1× liquidation preference (the investor gets their money back first on exit), participating rights (they also share in the upside after recouping their investment), anti-dilution protection, and possibly a board observer seat but no board vote.

As the company grows through Series A, B, and beyond, each round typically creates a new share class with its own priority stack. The articles become progressively more complex, and the statement of capital on the public register grows to reflect every class.

If you are approaching your first investment round, get the share structure right before the term sheet arrives. Investors expect a clean cap table, properly filed allotments, and articles that already accommodate the new class. Reconstructing a messy structure under due diligence pressure is expensive and can delay or kill a deal. Our guide on how to issue shares walks through the allotment and filing process in detail.

Frequently asked questions

Can I create a new share class without a special resolution?

In most cases, no. Creating a new share class requires amending the articles of association, which requires a special resolution (75% of votes cast). Some bespoke articles grant the directors power to create new classes by board resolution alone, but this is uncommon. Check your articles before assuming a board resolution is sufficient.

How much does it cost to set up alphabet shares?

There is no Companies House fee for filing a special resolution or amended articles. Filing form SH01 to allot new shares is also free online. The cost is in the professional work: drafting the articles amendment, preparing the resolutions, and issuing the share certificates. This is typically a few hundred pounds through a formation agent or solicitor — considerably less than unpicking a badly structured share capital later.

Do alphabet shares reduce my tax bill?

Alphabet shares allow the directors to declare different dividends on different classes, which can result in a lower overall tax liability when shareholders are in different tax bands. However, this is not automatic and not without risk. HMRC's settlements legislation can apply to arrangements between connected persons (such as spouses) where the primary purpose is tax reduction. Always take professional tax advice before implementing alphabet shares for income-splitting purposes.

What happens to share classes on a transfer of shares?

When shares are transferred from one person to another, the class and rights remain unchanged — the buyer receives the same class of shares the seller held. A share transfer is executed using a stock transfer form, and the register of members is updated to reflect the new holder. If the transfer takes the new holder above the 25% PSC threshold, a PSC notification (form PSC01) must be filed within 14 days.

Can I convert preference shares back to ordinary shares?

Yes, provided the articles permit conversion (or are amended to permit it) and the correct procedure is followed. This is a variation of class rights, which requires the consent of the affected class (usually 75% in nominal value) plus any additional requirements in the articles. File the resolution and updated articles with Companies House within 15 days.

Do I need to tell Companies House about my share classes?

Yes. Companies House must hold a current copy of your articles (which define the classes), and your statement of capital — updated via the SH01 form and each confirmation statement — must list every class, the number of shares, nominal value, amount paid up, and a prescribed summary of the rights attached.