It looks like the QE is still alongside in Southampton. You can see the ropes to the pier on the bridge cam. It also looks like there might be a fuel barge there as well on the port GPS locator.

This is supposed to be live at 22:33 Southampton time. I also checked the Southampton vts site and it does not show that the QE has sailed (gives the QM2

The link below is the ship's bridge cam and below the image is a link to location. Unfortunately, the Seascanner site is giving scheduled location rather than actual.

http://www.cruisin.me/cruise-ship-webcams/cunard-cruise-line/queen-elizabeth.php

I'll be excited to hear that you are underway - see you in SFO.