I don’t know if people outside the UK can sign, but it’s got to be worth trying.
I’ve signed it, but could you please amend the topic title to give more detail? Seeing just his name made me fear that the 100 year old legend & gentleman had passed away 
Done. Sorry to cause panic!
Thank you 
Tried, refused my Zip code.
Try PO6 1JR
I’ve signed the card virtually. I wholeheartedly appreciate the sentiment and all he’s done for us. Just don’t feel like voluntarily giving out any information about myself anymore.
Nice!! It works from my location too. Thank you!
Thanks for notifying us, I signed (using the gifted post code). My father died a couple of years ago just 4 months shy of his 100th, so I applaud Sir David for making it.
Shame this wasn’t setup to be signed by anyone anywhere.
You can always pretend to be 
SW1A 1AA is the postcode of Buckingham Palace, so put on your 
and wish him Happy Birithday 
Boring note - 38 Degrees is UK only, see 2.12 of its Terms of Service.
Legend, he is someone I was inspired by at a young age and have continued viewing his work (signed using dads old post code, wish they would have left it as something people could sign globally cos he has reached a lot of people)
would but dunno how to
With what’s going on here and what may yet be to come I’m beginning to wish I was anything but American. As for cheating I did.
Just search for a English postal code and enter it. When I did there happen to be one right on the petition page.
APPI BIRTHDAY!!! From SW1A 1AA