Student Visa US -> UK

Hey everyone. I'm moving from the US to the UK to attend grad school - had my biometrics appointment on the 5th, sent in my documents that same day, etc. How much longer should I expect to wait before I get my passport back from VFS? (the "keep your passport" service wasn't available when I applied, iirc).

I'm sitting over here kinda freaking out, because I honestly didn't expect it to take this long, and I've got hard travel plans on the 28th.

EDIT: GOT MY VISA YESTERDAY! The 26th, that is. Scotland, here I come :)