The announcements start at 1 PM PDT Saturday (3 PM CDT/4 PM EDT/8 PM GMT). We'll be "on the air" with our coverage a few minutes before the results start rolling out. You can go to the event page and enter your e-mail to receive a reminder of the event.
(No, I won't be making a flying visit to the UK or even to Seattle — in my current condition, it's just as well — I'll be hosting the coverage from here in my living room, making the best to work with LoneStarCon 3 to get the word out in a coordinated fashion.)