Once candidates have substantially completed their research projects, they then have to think about writing up their theses. The latter will almost certainly be the largest scale and most complex writing task they have ever undertaken, or indeed in many cases will ever undertake. Even if they have been writing regularly since the start of their candidacy, producing the thesis may still be seen as a huge mountain to scale. So while, during the latter stages of the research project, they should have been operating virtually autonomously, the chances are that they will need considerable support from their supervisors in producing their theses.