3 months HALF PRICE line rental. HTC ONE X 24 Month contract , 600 Mins , Unltd texts , 1 GB data for £36.00/month @ Vodafone
Saw it on banner advert. Only tested for HTC ONE X 24 Month contract , 600 Mins , Unltd texts , 1 GB data. Haven't tried for other plan.
Use promo code THREEMONTH during checkout to receive the 3 months half price rental
Edited - Apparently, the promo code seems to be working on other phones/contract