This website explains it simply. The CPS website was rather wordy in explaining it.
What Evidence Does The CPS Need To Charge Someone? | Burton Copeland
As a suspect who has been arrested on suspicion of committing a crime, you might be wondering about the criteria for the Crown Prosecution Service (CPS) to charge you. You may also be curious about the CPS’s function and how it collaborates with the police. This article aims to clarify the role...
www.burtoncopeland.com