Hi, I am a student in theoretical/fundamental physics that finished his masters couple of weeks ago. I'm still looking for a PhD starting asap. I am quite interested in an opened position at a UK top 10-15 university, the project seems interesting enough to invest 3 years in it. But I have some doubts regarding the reputation of this university (which I prefer not to reveal). The place seems nice, I am just afraid about how much it will count after my thesis graduation in my applications for postdoc (I know it shouldn't really me my problem now). I am totally unfamiliar with the mechanics of selection for postdocs, but how would weight the importance of the published works, the reputation of the supervisor and the reputation of the university? I am afraid this question may be really large and depend on the field. My concern is that by accepting this position, it may close doors of top-ranked places (which I'd like to have an experience of) forever.