According to Avanti, the computer assessments and CBI interview are Stage 5 of the assessment while these paper-based tests are Stage 4, and based on the email that I have also received along with what other people are saying, the situation looks to be doing paper-based assessments for people who haven't sat them before and will be invited back at a later stage to do computer tests if successful. The OPC haven't told me in my email that I will be sitting any more than three tests and I feel like it would've been important to mention that in the email instead of just the booklet, because that along with other things I'm hearing is confusing. I think for now I'll print off all the practice exercises just in case both stages are done in a single day rather than just the first ones. Better safe than sorry.