This gives me a bit of hope! I'd been seeing people getting replies with in a month, and I sent twice, once in July 2012 and November 2012!

Hi strelley :)

Thank you for your feedback {up} Great Success :P

You have been added to the list for the $10 gift certificate.

{star} [url=http://www.fanmail.biz/33098.html]David Tennant[/url] on Fanmail.biz | [url=http://www.fanmail.biz/feedback/David_Tennant.html]Previous Feedback(s) Received[/url]

Fanmail 8)

Hi all,
December 23rd 2012 I sent a card to David, I was thrilled when it arrived today signed. I'm a big fan of his years as Doctor Who.
[url=http://s97.photobucket.com/user/pinocchio1/media/IMG_0001-29_zps2a167358.jpg.html][img]http://i97.photobucket.com/albums/l204/pinocchio1/IMG_0001-29_zps2a167358.jpg[/img][/url]
[url=http://s97.photobucket.com/user/pinocchio1/media/IMG_0002-30_zps1270607b.jpg.html][img]http://i97.photobucket.com/albums/l204/pinocchio1/IMG_0002-30_zps1270607b.jpg[/img][/url]
The address I used was:
David Tennant
Independent Talent Group Ltd.
Oxford House
76 Oxford Street
London W1D 1BS