More bureaucracy; so then they'll need to link your proof of address to you actually being that person with some form of photo ID. Full time role and a computer system to support it! Probably have to build a little booth at the entrance with the obligatory brewing facilities included... Increased costs! The ANPR in place now is working well I understand. GM combined authority only need to link that to DVLA data and see where your car is registered and bingo, they've got all the info they need for the large majority of visitors. Those who flout the rules are probably prime canidates to also have no tax/insurance/MOT, so a bit of joined-up thinking here could save a fortune and not needlessly penalise the humble council tax payer. Sadly, local authorities and councils aren't renowed for their joined-up thinking.
I went last week and a rather rotund chap, seemingly sunbathing at the gate merely grunted "Where you from" and "What you got"... he seemed wholly disinterested in my responses. I could have been dumping radioactive plutonium and told him it was dust from my hoover and he wouldn't have cared.