I take it you mean in the Extra CP?
Only the TVX m8
Use to be able to get codes for Setanta and Red hot but they changed the way you buy the subscription.
The other channels that need to be paid for cant be activated using codes, think you need a card, it has some techy encryption that i know nothing about.
Basically, It might be able to be hacked but its not worthwhile for UK Gold and stuff so it hasn't been hacked.