Background: In the last couple of years, the number of international students entering the United Kingdom to study has increased. Despite the increase in the number of African students coming to the United Kingdom to further their studies, little is known about the experiences they face and how these challenges could impact their academic performance. Stress and mental health issues are common among numerous migrant populations around the world, especially international students. Although studying in a foreign country has many merits, however, achieving a new degree in a foreign land also comes with its challenges. These students face unique challenges when compared to domestic students. Thus, the study aims to explore the influence of migration on the mental health of international students and its effects on their academic performance. Method: From the 1st of July to the 31st of July 2023 a quantitative design was employed to collect data of Nigerian international students on a sample of 138 participants. Data was collected utilising a semi-structured questionnaire to obtain responses among the participants using a simple random sampling technique and analysis was done using SPSS. Moreover, ethical guidelines and permission were sought from the University of Wolverhampton Research team. Results: Of 138 participants, the mean age was 30.05 ± 10.82 years and a greater percentage of the participants (79%) were less than a year in the country as at the time of completing the survey while 21% had lived over a year in the United Kingdom. However, 71.5% of the participants claimed that difficulty in securing accommodation was a major factor for mental health issues and 70% affirmed that the issue of employment challenge was the life experiences that impact their mental well-being. Conclusions: The study revealed the mental health challenges international students face in the UK which negatively leads to poor academic performance. Thus there is a need for the implementation of regular mental health evaluations to detect severe stress, depression, and anxiety among these students.