Can somone from jersey text/call someone from london?

Okay, So I'm from jersey channel islands and my really good mate is from London/Hemel Hempstead.
I really want to text him, so that I don't have to constantly go on Skype and Facebook. I get unlimited texts and around 600minutes of calling time, I don't know if that'll change anything. But If I text him, will he get it? Or will it cost a lot of money? Because I don't want to spend loads of money since we can talk online… (I have an Iphone, not sure what phone he's got)
So Will the distance between us cause stuff with the texts?

Use WhatsApp. Its an app that lets you text to anyone in the world for free. I used it to text this one girl in Holland. I'm not sure about calling though. I think you have to have an international plan to do that.