Investing in the UK after the Autumn Budget: what overseas corporates should consider

The Autumn Budget gives overseas businesses a timely opportunity to revisit their UK investment plans. The Government’s emphasis on regional investment, including the Fiscal Devolution Roadmap, its offer to places and the Northern Growth Strategy, points towards a more locally focused investment proposition. For overseas businesses, that strengthens the case for looking at the UK not simply as one investment destination, but as a series of regional markets with different strengths and opportunities. That is an encouraging signal, but it is not a substitute for assessing the economics, location and delivery risks of an individual investment.

Our Investing in the UK report provides an important backdrop. It records the UK retaining second place in Europe for FDI projects, accounting for 15% of the European total, while also highlighting a decline in project numbers and wider European investment headwinds. The picture is therefore one of continuing opportunity, but competition for capital and pressure on investment decisions.

For a corporate considering a UK subsidiary, acquisition, joint venture or new operating site, the useful question is not simply whether the Budget makes Britain more attractive. It is what needs to change in the investment plan—and which assumptions still need to be tested.

Assess the whole tax position, not just the headline

The Budget package includes a consultation on Corporate Tax Simplification for Business Investment, alongside tax-related announcements covering multinational top-up taxes, the foreign permanent establishment exemption and R&D relief administration. Overseas groups should distinguish measures relevant to their structure from those that are still being developed. A consultation is not an available tax saving, and a policy announcement should not be treated as an operative rule without checking the detail and commencement provisions.

Before committing capital, commission a joined-up review of the proposed UK entity, acquisition funding, intra-group arrangements, IP ownership and profit flows. Ask advisers to identify which Budget measures could affect the group, what remains uncertain and whether the investment model needs updating. Keep potential future simplifications separate from the base-case financial assumptions.

Choose the location that can deliver the investment

One of the clearest messages from the Budget is the Government’s desire to unlock investment across the UK. The Fiscal Devolution Roadmap, Supporting local investment: An offer to places and the Northern Growth Strategy all point in that direction. For overseas investors, that provides a reason to look again at where in the UK an investment should be made, rather than defaulting to a national or London-led proposition.

The right location should follow the operating model. Compare access to customers, specialist talent, supply chains, research partners, transport and suitable premises.

Explore local support, but verify eligibility, conditions and delivery dates rather than assuming that an announced programme will be available to the project.

For the board, the key question is: which location gives this investment the strongest combination of commercial opportunity and a credible route to operation?

Test infrastructure and energy assumptions early

The Budget package includes material on accelerating electricity network connections for strategic demand and a Data Centre Covenant. These are particularly relevant areas to investigate where a proposed investment depends on substantial power capacity or digital infrastructure. Their inclusion in the package does not, by itself, guarantee a connection date or a lower energy bill for an individual business.

For manufacturing, logistics or data-intensive operations, test power availability, connection terms, site readiness and construction dependencies before agreeing a launch timetable. Build contingency into funding and contracts, and identify who bears the cost if infrastructure or premises are not ready. A promising policy direction cannot compensate for an undeliverable site.

Match the entry route to the strategy—and allow for approvals

An acquisition, joint venture and new UK operation should be evaluated against the same commercial objectives, but with different execution risks. Consider the speed of market access, management control, integration needs, funding requirements and the protection of commercially important technology and relationships.

National security screening remains a separate consideration from the Budget’s growth agenda. Under the National Security and Investment Act, certain acquisitions require approval before completion; completing a notifiable acquisition without approval can make it void and expose the acquirer to penalties. This is an existing regulatory requirement, not a new Budget measure.

Identify potential screening and other regulatory issues at the start, and reflect them in due diligence, transaction conditions and the timetable. Do not assume that a growth-sector investment will avoid scrutiny simply because it aligns with government priorities.

Plan the operating business alongside the transaction

Buying or establishing a UK entity is only one part of market entry. The operating plan should also address routes to market, supply-chain resilience, strategic partnerships, technology and IP, and any contractual or regulatory barriers. Treat these as investment-design questions, not issues to defer until after completion.

Before launch, bring together workforce and immigration planning, employment arrangements, customer and supplier contracts, data handling, IP protection, premises and financing. Test whether the proposed structure supports both the first phase of entry and later expansion. For owner-led businesses, any founder relocation should be addressed alongside—but not confused with—the company’s investment analysis.

Turn the Budget into an investment action plan

Our view is that the most useful post-Budget response is a disciplined review, rather than a blanket decision to accelerate or delay. Overseas corporates should ask:

Which announced measures actually affect our group, and which remain consultations or proposals?
Does our preferred UK location offer the talent, infrastructure and commercial access we need?
Is an acquisition, joint venture or new operation the best route—and what approvals must be built into the timetable?

Have we aligned tax, funding, contracts, workforce, IP and premises in one delivery plan?
What must be verified before we commit capital, and who is responsible for each dependency?

The Budget gives overseas investors some clearer signals about where the Government wants capital and growth to flow, particularly through its focus on regional investment, infrastructure and strategic growth. That does not replace the fundamentals of an investment decision, but it should prompt businesses already considering the UK to revisit where they invest, how they enter the market and what support or infrastructure may now be available. The opportunity is to translate those Budget signals into a location, structure and execution plan capable of delivering sustainable growth.

Considering your next UK investment? Read our Investing in the UK report to explore the opportunities and challenges shaping cross-border investment, and speak to Irwin Mitchell about translating your plans into a coordinated market-entry strategy.

Keep up to date with our Budget coverage

On 28 October, our experts will be providing instant reaction to the key Budget measures on our dedicated hub and our LinkedIn page. And in the following weeks, we’ll have in-depth analysis and advice on how the Chancellor’s measures will affect your business.