I have another question, do you give a presentation as a start or they just start ask questions about the thesis and work?

Thanks a lot for your replies, guys. It seems that I'd better not to put it off for that long. I'll try my best then.

Thanks for your suggestion. That will be a solution. Since the course is quite intensive and I also need time to catch up on some basic mathematics, so it may be better for me to leave the viva after the course. Is there a rule that you have to do your viva like some weeks or months later after you submit your thesis?

Thanks

I am now writing up my phd thesis in biology, and instead of planning to a postdoc after that, in October I'm gonna do a MSc in applied mathematics first, hoping to do mathematical biology in future. I find it's quite tough for me to submit my thesis and do my viva between now and the end of September. I was wondering if I can just submit it in September and do my viva after I finish the MSc course. Does the submission of thesis mean that I am "finished" in this university and I can get a move onto the next stage without restrictions of the current university?

Thanks
Michael