There IS a link in the store for it.
On the store [Home] page, right under the {Music} section, there are 2 rows of little rectangles, with things like "The Beatles Studio Album", "iTunes Match", "iTunes Gift Cards", as well as the "Single Of The Week".
Look for the Blue one with a BIG "12" on it. I checked the UK one & it worked there too. I'm currently in America at school, but I can still download mine, because my billing address is still in Canada, I don't know if maybe it's the specific place you're in has restrictions, like I can't watch the streaming TV shows from ShowCase in the US because they block it specifically & I don't think any of the Giveaways would be stuff that they'd restrict like that.
I know the downloads are different in differnt countries, but one thing I noticed was that Half of Canada's are things that are ALREADY FREE. For example, On the 27th they had 5 "Homegrown TV Pilots" which I downloaded weeks ago, & Yes, it's not even a different wrapper, when I clicked it it said "You have already purchased this". Then today we have 4 "Unforgetable TV Dramas", again, 1 episode of 4 different shows, that has also been free for at least a month.
When I was looking for other people noticing the same thing, I saw that the UK got "Sonic & SEGA All-Star Racing" today, which, in the Canada store at least, is ALREADY FREE, I'm willing to bet it was always free in UK too.
Anyone else notice any "Giveaways" of things that were already FREE?