I just called up Virgin Media as they had recently increased their price to existing customers by £4.50/month starting from 1st February 2015. I was on their "Big Kahuna" package.
Clearly I wasn't happy about this, so I called up and spoke to customer services and they offered me a 3 month free trial of Sky sports and Sky Movies.
This is worth £102.75, so it was a pretty nice surprise. I've had a lot of problems with Virgin Media, and I think to increase the bill by £4.50 a month, when it is so expensive already is incredibly cynical. I am keen to share this with as many people as possible so they can take advantage of this hidden offer and hit Virgin Media where it hurts - in the Kahunas!