Research in the UK

Hello, I am a final year Lebanese medical student. I was wondering about research in the UK, especially if we are considering a competitive residency like radiology.
How different is the process of applying to paid research in the UK than in the USA? What is the procedure? What are the availabilities in light of the covid-19 situation?
Am I right in assuming that working in research in radiology for at least 1 year in the UK will greatly increase my chances of getting accepted in radiology?