Was looking for free trial with deezer as I didn't want to pay £10 per month. I came across this and it works. I sign up and within a few minutes I got an email with a unique code to use.
Not sure if this is a deal or voucher.
Hope this helps someone.
3 months free but will need a payment detail however you can always cancel before its due.
On Telegraph website states expired sometime in Sept 2014 but it is still working.