Sorry if this has been raised elsewhere, but I couldn't find any mention of it. As a UK subscriber, when I attempted to take advantage of the great offer with Audible, I was redirected to the UK site, which didn't advertise any special offer or link to Podshock.
I took the opportunity to contact Audible in the US, who forwarded my query to the UK site, and they kindly offered to set up a free trial for me.
So it never hurts to ask
It may have been for US only, but I don't recall seeing any mention of that limitation with the initial offer. I am glad you got the free trial though. Thanks for letting us know.
The Gallifreyan Embassy - Forum