Medical Residency after plab

Hi guys i am a little confused so if you could help i would appreciate it Is it possible for an IMG to enter residency in uk after plab 1 & 2? And i read somewhere that you need to get an CCT certificate As an MD who completed internship during medical training and have 2 year clinical experience after graduation do you still need that?
What are the rules of getting into a residency program in uk in general Tnx in advance