Hi Adrian,
Thanks, but it seems they are not trading anymore... phone number doesn't work. Their last entry on their facebook page was from 2012.
According to Ross-Tech website you can program a "new" key with VCDS, IF you know the 4-digit PIN-code.
From this link:
http://wiki.ross-tech.com/wiki/index.php/Immobilizer
"There are Locksmith Supply Companies that sell Products that purport to be able to extract PIN Codes, which could then be used by VCDS. Just as they sell Lockpicking Tools to legal Users, those Tools could also be used for Criminal Purposes and as a Result, we do not sell or recommend them."