Oh right. I was under the impression that I would have both the visa in the passport AND and a biometric residence permit. When I applied online, I was given a post office address in Edinburgh and informed that I had to pick up the permit within 10 days of arriving in the UK.
Here's what I'm thinking will happen: I'll get my application paperwork back from Sheffield, including my passport. I was thinking the passport would have a visa in it with a visa start date, and I have to be in the UK within 30 days of that start date. Then, when I get to the UK (Edinburgh), that I ALSO have to have this BRP, which they give you 10 days to collect.
So, is that not right? It's just the BRP, and not a visa sticker? If so, do they just issue a letter stating the start date, and there's actually nothing placed in my passport? How does Border Patrol account for all this? I guess I will find out shortly. I'll report back here as soon as I get my paperwork back.