Launching Your Startup in the UK

Overview 📘

Expanding into the UK can be a major milestone for an international startup. The UK remains an attractive location for technology businesses due to its strong investment ecosystem, skilled workforce, favourable timezone positioning, and access to global markets.

However, setting up operations in the UK involves more than simply incorporating a company. Founders need to consider:

  • The correct legal structure
  • UK tax registrations
  • Payroll and employment obligations
  • Banking and insurance
  • Ongoing filing deadlines and compliance

This guide provides a practical overview of the key steps involved in establishing a UK presence.

1. Choose Your UK Structure: Branch or Subsidiary?

One of the first decisions is whether to:

  • Register a UK branch of your overseas company, or
  • Incorporate a separate UK subsidiary company

The right structure depends on your long-term plans, fundraising strategy, and operational requirements.


🏢 UK Branch

A branch is treated as an extension of the overseas parent company.

Potential advantages:

  • May qualify for SEIS/EIS in some cases
  • Simpler group structure

Potential drawbacks:

  • Overseas parent company accounts usually become publicly visible on the UK register
  • More administrative complexity
  • Some filings still require paper forms
  • Often more difficult for banking and supplier onboarding

🏣 UK Subsidiary

A subsidiary is a separate UK legal entity owned by the overseas parent.

Potential advantages:

  • Easier to operate and scale
  • Simpler online administration
  • Usually easier to open UK bank accounts
  • More familiar structure for UK investors and suppliers

Potential drawbacks:

  • Generally cannot access SEIS/EIS reliefs
  • Additional group reporting considerations may apply for larger groups

💡 Most international tech startups choose a UK subsidiary because it is simpler operationally and easier to scale with UK staff and investors.

2. Register for UK Taxes

Once the UK entity is formed, it will usually need to register with HMRC for one or more taxes.

Corporation Tax

All UK companies must register for Corporation Tax.

The company will normally pay Corporation Tax on its taxable profits at rates currently between 19% and 25%, depending on profit levels.


➡️ PAYE

You must register for PAYE if:

  • You employ UK staff, or
  • Directors receive salary payments

This also creates obligations around:

  • Payroll reporting
  • National Insurance
  • Workplace pensions

➡️ VAT

VAT registration becomes compulsory once UK taxable turnover exceeds the registration threshold (£90,000 at the time of writing).

However, some businesses choose to register voluntarily earlier in order to:

  • Reclaim VAT on startup costs
  • Improve credibility with suppliers and customers

🔗 https://www.gov.uk/vat-registration

3. Set Up the Core Operational Admin

➡️ Open a UK Business Bank Account

Most businesses benefit from using:

  • A traditional bank for stability
  • A challenger bank for speed and international payments

Common options include:

  • Barclays
  • HSBC
  • NatWest
  • Starling
  • Wise
  • Monzo

💡 Many international founders use Wise alongside a traditional UK bank because of the foreign exchange functionality.


➡️ Register with the ICO

If your business processes personal data, you may need to register with the Information Commissioner’s Office (ICO).

This typically costs around £40–£60 per year.

🔗 https://ico.org.uk/for-organisations/data-protection-fee/


➡️ Arrange Business Insurance

Typical insurance policies include:

  • Employers’ Liability Insurance (mandatory for most UK employers)
  • Professional Indemnity Insurance
  • Business contents insurance
  • Cyber insurance

Startup-focused brokers such as Superscript and PolicyBee are commonly used by tech businesses.


➡️Set Up a Registered Office Address

All UK companies need a registered office address.

Popular providers include:

  • Hoxton Mix
  • Made Simple
  • Rapid Formations

📬 Make sure your provider scans and forwards post promptly, as HMRC and Companies House still rely heavily on physical mail.

4. Stay on Top of Filing Deadlines

UK companies report to two main authorities:

🏛️ HMRC

Responsible for:

  • Corporation Tax
  • PAYE
  • VAT

HMRC deadlines are not always immediately obvious and are often confirmed by post after registration.

🏛️ Companies House

Responsible for public company filings, including:

  • Annual accounts
  • Confirmation statements
  • Director updates

💡 We strongly recommend maintaining a simple compliance tracker or Trello board containing:

  • Filing deadlines
  • Tax payment dates
  • Payroll dates
  • Pension obligations

Do not rely solely on reminders from HMRC or Companies House.

5. Build a Strong UK Advisory Team

Expanding into a new jurisdiction is significantly easier with experienced local advisers.

Most scaling startups should have access to:

  • Legal advisers
  • HR support
  • Employment specialists
  • Accountants and tax advisers familiar with international startups

🔍 UK employment and tax rules are often more complex than founders initially expect, particularly around:

  • PAYE
  • Employee rights
  • Share options
  • Permanent establishment risks
  • VAT

How Barnes & Scott Can Help

We work with international startups expanding into the UK and can support with:

  • UK company formation
  • Tax registrations
  • Payroll and pensions
  • VAT setup
  • International structuring
  • R&D tax relief
  • EMI share schemes
  • Ongoing compliance and advisory support

Whether you are hiring your first UK employee or building a larger UK operation, we can help you structure things correctly from day one.

📩 Contact us at team@barnesandscott.com if you are planning a UK expansion.

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