The United Kingdom has significantly strengthened its legal framework against hostile foreign state activity after the National Security (State Threats) Act received Royal Assent, marking one of the most substantial reforms to Britain’s national security legislation in decades.
The legislation grants police, the security and intelligence agencies, and prosecutors enhanced powers to investigate, disrupt and prosecute individuals acting on behalf of foreign governments or state-backed organisations seeking to undermine the UK’s national security.
The move comes amid increasing concerns within the British government over espionage, foreign interference, cyber-attacks, political influence operations and the targeting of diaspora communities by hostile states.
Why the Law Was Introduced
Successive UK governments have argued that existing legislation, much of which dated back to the Official Secrets Acts of the early twentieth century, was no longer sufficient to deal with modern state-sponsored threats.
Officials have warned that foreign intelligence services increasingly employ sophisticated methods, including cyber operations, economic coercion, covert political influence, disinformation campaigns and the recruitment of individuals inside the UK to obtain sensitive information or intimidate political opponents.
The government has also highlighted concerns over attempts by hostile states to interfere in democratic institutions, universities, research programmes, critical national infrastructure and advanced technology sectors.
Key Provisions
The Act creates a range of new criminal offences designed to tackle state-backed hostile activity.
Among its provisions are offences relating to assisting foreign intelligence services, obtaining or disclosing protected information, sabotage, foreign interference and activities carried out for or on behalf of foreign powers that threaten the UK’s security.
The legislation also establishes stronger investigative powers, enabling law enforcement agencies to respond more effectively to suspected state-sponsored operations.
Individuals convicted of supporting, assisting or working for foreign state-backed groups involved in activities that threaten national security could face prison sentences of up to 14 years, depending on the offence.
Foreign Influence Registration Scheme
One of the most significant elements of the legislation is the introduction of a Foreign Influence Registration Scheme (FIRS).
The scheme will require certain individuals and organisations carrying out political influence activities in the UK on behalf of specified foreign governments or foreign entities to register those relationships with the authorities.
The government says the measure is intended to improve transparency rather than restrict legitimate diplomatic engagement or lawful international cooperation.
Failure to comply with registration requirements could constitute a criminal offence.
Responding to a Changing Threat Landscape
British security officials have repeatedly warned that hostile state activity has evolved rapidly in recent years.
Alongside traditional espionage, authorities point to cyber-attacks against government departments and businesses, attempts to steal sensitive research, interference in elections and efforts to monitor or intimidate dissidents and diaspora communities living in Britain.
The government argues that the legislation equips investigators with modern legal tools to address these evolving threats while protecting the UK’s democratic institutions and national resilience.
Balancing Security and Civil Liberties
While ministers have welcomed the Act as an essential national security measure, some civil liberties organisations and legal experts have called for robust oversight to ensure that the expanded powers are exercised proportionately and with appropriate judicial safeguards.
The government maintains that the legislation includes safeguards and oversight mechanisms intended to protect fundamental rights while enabling authorities to respond effectively to genuine national security threats.
Wider International Context
The legislation reflects a broader trend among Western democracies to strengthen national security laws in response to increasing geopolitical tensions and concerns over foreign interference.
Countries including the United States, Australia and Canada have introduced or expanded similar measures aimed at countering espionage, protecting critical infrastructure and increasing transparency around foreign influence operations.
With Royal Assent now granted, the UK government says the Act represents a major step in modernising Britain’s national security framework and ensuring that law enforcement and intelligence agencies have the legal powers required to confront increasingly complex threats from hostile foreign states in the years ahead.
