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Following the UK’s vote to leave the EU, the UK, Europe and now the United States have found themselves in a state of political and economic uncertainty. As voters around the world express frustrations at the ballot box, the previously stable infrastructure sector is not immune either from sharp market fluctuations or shifts in policy.
Although ministers in the UK have been quick to offer assurances about the UK remaining ‘open for business’, with green lights for the Hinkley Point C new nuclear project, the full HS2 high speed railway line and a third runway at Heathrow airport, other moves have raised political risk concerns which have not traditionally featured prominently for investors in the UK, such as the degree of international involvement in future foreign investment in critical national infrastructure.
The Brexit vote in the UK - and the uncertainty it brought - had most immediate effect on the currency markets. Sterling fell against other major currencies and continues to react to developments in the Brexit process.
However, infrastructure investors remain mostly sanguine about the consequences of Brexit. The UK will remain an attractive foreign investment destination in regulated and other social and economic infrastructure classes for a number of reasons, unaffected by the current uncertainties:
Although there is plainly uncertainty in what Brexit may bring, infrastructure investors are still able to manage risk through rigorous diligence and pricing.
In the immediate wake of the Brexit vote, the new UK Government heralded a return to a more active UK industrial strategy and announced an unexpected but ultimately-brief review of the new nuclear power project at Hinkley Point C, on national security grounds. A consultation is expected shortly on a new framework for assessing foreign investments in 'critical national infrastructure', although it is considered unlikely to mark a shift away from the UK's welcoming attitude to foreign investment. It also recently shelved its previous plans to make the National Infrastructure Commission statutorily independent. It had been hoped that such independence would reduce the impact of the electoral cycle on long term infrastructure development decisions.
Shifts in policy such as these, to take (or not to relinquish) political control, may become the norm in the short-to-medium term as politicians seek to interpret messages sent by voters.
The UK faces a number of unknowns that rest on future government decisions and negotiations with the EU. Despite the uncertainty, businesses can prepare for Brexit.
Owners of infrastructure assets and prospective investors can assess the potential consequence of Brexit, by asking, for example:
By assessing and quantifying these and asset-specific challenges, infrastructure investors can define and prioritise mitigation strategies. Investors may wish to lobby government and industry bodies with arguments to shape future policy. They should monitor developments as the political landscape continues to shift and be prepared to modify their investment models and policies in response to evolving certainties.
The contents of this publication are for reference purposes only and may not be current as at the date of accessing this publication. They do not constitute legal advice and should not be relied upon as such. Specific legal advice about your specific circumstances should always be sought separately before taking any action based on this publication.
© Herbert Smith Freehills 2025
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