Can i apply for a CRB check on my own?
I may be wrong here, but I think that the only people who can apply for a CRB check are potential employers. Depending on your job application employees can get a hard or soft check. The soft check is for convictions and cautions, a hard check, which you don’t have access to, is for general intelligence such as suspicious behavior, complaints which did not lead to conviction or caution. As I said, I am not 100% sure of the answer but I am sure there will be a website that can explain it more fully.
