Between 2021 and 2024, approximately four million people arrived in the United Kingdom in what has been termed a significant shift in migration patterns under former Prime Minister Boris Johnson’s administration. This influx, sometimes referred to as the "Boriswave," has led to concerns about the impact on public services, social cohesion, and the economy.

The wave of arrivals represents about one in every 30 people currently residing in the UK, marking a notable transformation in the country’s demographic makeup. Notably, fewer than 6 percent of these migrants were skilled workers, highlighting a change in the profile of incoming residents. Projections indicate that by 2030, roughly 1.6 million among these arrivals could qualify for indefinite leave to remain, potentially becoming permanent residents.

In response, Home Secretary Shabana Mahmood has proposed tightening the rules around permanent settlement. Key measures include extending the minimum residency period required to apply for indefinite leave from five to ten years. For those who entered on health and social care visas—an important segment of the recent arrivals—the qualifying period would increase to 15 years. Officials argue that these adjustments are necessary to prevent what they see as an unsustainable strain on public finances and public services.

However, these proposed changes have met resistance from some members of the Labour Party’s soft-left faction. Angela Rayner, the party’s local government secretary, has characterized the government’s approach as "un-British," signaling disagreement within the party over the policy direction. Critics warn that the expanded migration during this period occurred without public mandate or sufficient parliamentary oversight.

Meanwhile, Andy Burnham, the mayor of Greater Manchester, has expressed support for Mahmood’s measures, emphasizing the importance of maintaining stricter controls to avoid further pressure on local communities and infrastructure. Observers note that continued backing from political leaders like Burnham may be crucial for the government to implement its proposed reforms.

The debate underscores ongoing tensions within the UK’s political landscape over immigration policy, especially as the country prepares for future elections. Supporters of tighter immigration controls frame the reforms as necessary for economic stability and social cohesion, while opponents warn of the potential social and ethical implications of extending residency requirements for migrants who have already settled in the UK.