Just out of curiousity, how did it come packaged to you? Was it neat and orderly?
Actually, I was quite surprised at how it came. Since it came from Sheffield the package itself was a little battered, but everything was in tact. It was a very small thin package, and my passport and ALL of my documents were sent back to me except the printed application, appendix 2, screenshots, sponsor letter and employee/landlord letters. They sent back the things I'd photocopied and more. They even returned our marriage certificate, which I didn't think they would do.
I have all of our bank statements/payslips, tenancy agreement, our personal letters, our photos, my passport photo, etc. It was all placed neatly in the package!
They also sent a letter saying it was approved, and instructions for my BRP Card. That letter must be given to the border agent along with the passport/vignette. So bring it with you!