It did thank you Paul.
Here's what I remember of the timeline:
Assessment day - Stage 1 & 2 tests then if you pass:
Driver Manager Interview, then if you pass:
MMI interview, then if you pass:
Medical, then if you pass:
On to training!
They get you to do stage 1 (the paper tests), then the DFFT (the fault finding test all GTR TOCs use as an additional test) and then stage 2 (the computer based tests - without the MMI interview). If you have passed any of these tests (in the last 2 years) then you wont have to retake, you'll just have to retake the ones you've failed/have never taken.
Because I only had to do the DFFT test, I don't know if they had to do the prep questions for the MMI interview on the assessment day or if they will do them on their MMI interview day. To me it would make sense for these to be done on the MMI interview day because you're not marked on the answers, it's just a helpful tool to help you focus on the interview.