Thos who registered for the recent Denon DJ webinar hosted by DJ Kit will be aware that there was an offer of a £10 voucher for each person.
Well today after much persistence I have discovered that these are being handled by Denon, and have not been sent out yet.
Thanks for (not) letting us know, Denon. 
[edit] It looks like they’ve been emailed out now. There’s a catch - you have to spend £100!