AVerMedia have tried to clarify the whole TV license issue pertaining to TV acrds in PCs and laptops..
For users this means that they must have a TV licence for their primary residence in order to use a TV tuner on their PC/Laptop, in their home or on the move. A TV licence held at a primary residence also covers laptop users in places such as on trains, in cafes or hotels if they are solely running off of a battery. However, if a user is using a laptop that is plugged into the mains whilst on the move, they will require an additional licence.
Check out the full press release here.