Sapins, Road Fund Tax! Not any more. It's now Vehicle Licence Tax. Nothing to do with the upkeep of the roads, which I think it was intended for in the first place. Not ringfenced so can be used for anything they (the Government) wants.
I can have 1 or 100 TVs in my house and I still only need to pay 1 licence fee. I understood the criteria to be: If you have any device that can receive broadcasts off air you need a licence. For example if I have a Video recorder but no TV I am still liable to buy a licence. So technically it is not a TV licence but more an "off air broadcast" licence which would include PCs anyway.