UK faces mounting STEM talent exodus amid tighter visa rules

The United Kingdom is witnessing a significant outflow of skilled professionals in science, technology, engineering, and mathematics (STEM), as employers report that tougher immigration rules are compounding challenges in recruiting and retaining critical talent. New figures from SThree's STEM Workforce Report show a growing risk to the country's future competitiveness in sectors considered vital to economic growth.

Rising departures

According to the findings, nearly one in four (23%) UK STEM employers have experienced the loss of skilled workers to opportunities abroad over the last year. The situation shows signs of intensifying: 13% of STEM professionals say they are actively planning to move overseas, while a further 25% would consider relocation if a suitable offer arose within the next 12 months.

Such departures reflect international demand for talent. Nearly one in three (31%) respondents reported being approached by foreign employers in the past year, highlighting the competitive global landscape for experienced scientists, engineers, technologists and researchers.

Policy pressures

Tightening UK immigration policy is cited as a factor influencing the talent exodus. Almost two-thirds (62%) of surveyed STEM professionals fear that stricter rules will erode the UK's ability to compete in high-value, knowledge-driven sectors.

The minimum salary threshold for the Skilled Worker visa has increased twice in 2024, rising first from GBP £26,200 to GBP £38,700 in April and again to GBP £41,700 in July. Over a third (32%) of employers say current immigration rules impede their ability to hire overseas candidates for open positions. Another 41% state their organisations will not sponsor foreign workers' visas.

Sector implications

Nearly 10 million people in the UK work in roles related to STEM. These sectors, which include technology and IT, engineering and manufacturing, healthcare and pharmaceuticals, and scientific research, are widely regarded as critical to the country's ambition for economic growth and technological transformation.

Employers warn that talent shortages threaten strategic areas such as life sciences, engineering and digital technologies. Early-career scientists, engineers and researchers are cited as being particularly exposed to new hiring barriers, which may further widen skills gaps in future years.

Call for national strategy

"Skilled immigration is crucial to the UK's economic future. Yet UK businesses now face stricter sponsorship rules just as global competition for STEM talent intensifies.

"Without the right STEM talent, we cannot deliver on net zero and digital transformation, nor remain competitive in vital sectors such as life sciences, technology and engineering, all of which underpin the government's Industrial Strategy.

"It is therefore hard for STEM employers to understand the rationale for increasing salary requirements and reducing the range of eligible roles for skilled worker visas. This squeeze will be felt most by early-career scientists, engineers and researchers - the very people UK employers depend on to fill skills gaps and build future capability.

"We urgently need a national STEM strategy to tackle the problem from both sides. We must keep the brightest minds in the UK while attracting international expertise where it's needed most. We risk becoming a training ground for talented people who then leave to build their lives in successful, modern economies elsewhere," said Rakesh Patel, Managing Director - UK and Rest of Europe, SThree.