Background: This study undertook a comprehensive examination of the imperative task of improving staff retention within the National Health Service (NHS) Research and Development (R&D) sector in the UK. The motivation stemmed from the observed decline in staff retention over the years, posing a significant threat to the continuity of healthcare research and innovation. Aim: The primary objective of this systematic review was to elucidate impactful measures aimed at enhancing staff retention within NHS R&D. The study recognized the critical role of sustained staff commitment in preventing disruptions to research projects, ensuring efficient resource utilization, and maintaining the retention of crucial knowledge, research quality, and impact. The overarching aim was to mitigate the potential hindrances to the progress of medical advancements. Method: Conducted as a systematic review, the study employed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) reporting checklist. The research followed the Population, Intervention, Comparison, Outcome (PICO) format to frame research questions systematically. A meticulous search and screening process was employed to identify relevant studies, and data synthesis methods were utilized to draw meaningful conclusions from the selected literature. Conclusion: The study concluded by emphasizing the critical need to address staff retention issues within NHS R&D sections. The systematic review supported a comprehensive and tailored approach, urging the NHS to invest in its researchers, create a supportive work environment, and prioritize the physical and mental well-being of staff. By implementing these evidenced-based strategies, the NHS can effectively enhance the retention of its research talent, thereby fostering ongoing healthcare innovation and improvement. The findings presented in this study contribute to a detailed understanding of staff retention issues within R&D sections, providing a valuable foundation for future initiatives in this crucial domain.