Licensing enforcement costs = waste of euros (Score 0)

So in NZ we had a fee for TV licensing but they scrapped it when the number of payers was so low and estimated cost of enforcement was impractically high. In the UK where I am now, they're still enforced with rapid enthusiasm -- their ads are scary (No TV license? Fine. £1000 with scary white bold letters on the Underground etc), guys drive around with vans detecting residual signals emanating from TVs on and receiving a signal. With the fee being so low, and given it's a fee retrospective to use (i.e. suddenly people have to pay for something they got free before), I'll be super impressed if the whole thing is practical. Also, if it's location-based, what do they do about mobile phones?