If you do the CBI it overwrites your MMI pas or fail. So you'd have to inform the toc your potentially starting with that you no longer meet the requirementsSo it may well take years… hmmm. I have been invited for opc to do CBI only as I have previously sat all other test. And I already have offer to start with another freight company in january. I am in dilemma here. Can anyone suggest whether I should go for the CBI or not?