UK MARKET ENTRY · INSIGHT

UK Subsidiary vs Branch: Which Structure Should an Overseas Company Choose?

For an overseas company entering the UK, one of the first structural decisions is whether to incorporate a UK subsidiary or operate through a UK branch, formally registered as a UK establishment. The right answer depends less on which structure is quicker to open and more on how the UK operation will actually trade, contract, hire, manage risk and develop over time.

Updated 30 October 2026

UK subsidiary vs branch: the key difference

The distinction is legal and operational. A subsidiary has its own corporate identity in the UK. The overseas parent owns the shares, but the subsidiary enters into its own contracts and has its own rights and obligations. A branch, by contrast, is an extension of the overseas company. The parent itself remains the legal entity carrying on the UK business.

Setting up a UK subsidiary

A UK subsidiary is usually incorporated as a private limited company. The overseas parent can own 100% of the shares, while the UK company operates as a distinct corporate body.

This structure is often considered where the group expects the UK business to have its own employees, customers, contracts, banking relationships, management responsibilities or longer-term commercial identity. It can also make the relationship between the UK operation and the overseas parent easier for counterparties to understand.

Why companies choose a subsidiary

• A separate UK legal entity and clearer ring-fencing of ordinary operating liabilities.
• A structure familiar to UK customers, suppliers, banks and professional advisers.
• A clearer platform for local hiring, contracting and future UK growth.
• Potentially cleaner separation if the UK business is later financed, reorganised or sold.

The trade-off is that the subsidiary has its own UK corporate governance, accounts, tax and filing obligations. Transactions between the subsidiary and its overseas parent also need to be commercially coherent and, where relevant, considered from a tax and transfer-pricing perspective.

Setting up a UK branch

For the registration process, documents and ongoing obligations, see How to Set Up a UK Branch for an Overseas Company.

A branch is not a new company. It is the overseas company carrying on business through a UK establishment. Companies House guidance states that an overseas company with a qualifying physical presence in the UK must register the establishment, generally within one month of opening it.

Registration involves more than simply providing a UK address. Depending on the parent company's circumstances, constitutional documents, company information and accounts may need to be filed. The parent company's directors are also relevant to the overseas-company registration regime.

Why companies choose a branch

• The UK activity remains directly within the existing overseas company.
• No separate shareholder structure is required for the UK operation.
• It can suit businesses where the UK presence is genuinely an extension of the parent rather than a standalone local business.

The principal commercial consideration is that there is no corporate separation between branch and parent. Obligations incurred through the branch are obligations of the overseas company itself. The disclosure and accounting implications should therefore be considered before assuming that a branch is automatically the simpler option.

Does an overseas company always need to register a UK branch?

No. Carrying on some business connected with the UK does not by itself mean an overseas company must register a UK establishment. Companies House focuses on whether there is a degree of physical presence in the UK, such as a branch or place of business through which business is carried on. A company with no UK base may not need Companies House registration, although UK tax obligations can still arise depending on the facts.

Tax: branch and subsidiary are not interchangeable

The legal structure is only one part of the analysis. A foreign company may become subject to UK Corporation Tax in relation to business carried on through a UK permanent establishment. UK tax law includes a branch or office among the examples of a fixed place of business that can constitute a permanent establishment, subject to the detailed statutory and treaty rules.

A UK subsidiary, meanwhile, is itself a UK company and has its own tax position. The group must also consider how value, functions, contracts, costs and management are allocated between the UK company and its overseas parent. Tax treatment should therefore be modelled around the actual operating facts rather than used as a shortcut for choosing the legal form.

Which is better for UK market entry?

There is no universal answer. The decision should follow the commercial model.

A UK subsidiary is often worth considering when the intention is to build a meaningful local operation with its own staff, contracts, management and customer relationships. A UK branch can be appropriate where the UK operation should remain an integrated part of the overseas company and the parent is comfortable carrying the UK obligations directly.

Before choosing, I normally look at six questions: who will contract with UK customers; where management decisions will be made; who will employ staff; what liability should sit with the parent; what banking and operational infrastructure is required; and what the business is expected to look like in three to five years.

Common mistake: choosing the structure before designing the operation

The registration itself is usually the easy part. Problems arise when a company incorporates a subsidiary or registers a branch before deciding where contracts, people, management, intellectual property, costs and revenue should actually sit.

For an international group, the better sequence is to define the UK operating model first and then select the legal structure that supports it. This reduces the risk of having to reorganise the business shortly after launch.

Frequently asked questions

Is a UK branch a separate company?

No. A UK branch, or UK establishment, is part of the overseas company rather than a separate legal entity.

Is a UK subsidiary a separate legal entity?

Yes. A UK subsidiary incorporated as a limited company is a separate corporate body, even where the overseas parent owns 100% of its shares.

How do I register a branch in the UK?

Where an overseas company opens a registrable UK establishment, it files the required overseas-company registration information with Companies House. Current Companies House guidance uses form OS IN01 and requires filing within one month of opening the establishment.

Can a foreign company set up a UK subsidiary?

Yes. An overseas company can own a UK limited company. The correct ownership, governance, tax and operating arrangements should be designed around the wider group.

Which is better: a UK subsidiary or branch?

It depends on the commercial objective. A subsidiary provides a separate UK corporate vehicle; a branch keeps the UK activity within the overseas company. Liability, contracts, people, tax, reporting and future plans should all be considered together.