Why is this support not common? It is a damning indictment of our system that such positive stories from Black PhD students are the exception and not the rule. Why are best practices not being adopted sector wide? Introductory programmes such as Horizons, outlined in Simone's chapter, can inspire further study and should be replicated across the country. Once enrolled, the behaviour of supervisors can be the sole difference between failure for a student and success. Supervisors therefore need to be adequately trained. Rees’ chapter shows how mismanagement can have stark consequences for a trainee's mental and physical health and how the same person under the correct guidance can flourish and excel. The toxicity, which seems to be so prevalent in our sector, needs to be rooted out and replaced with the proactiveness and holistic support detailed in this part. Why is this not a feature of our system?