Its not only vans, all 4x4s registered before 2002 and motor caravans.
I live inside the zone, there are going to be so many people getting clobbered that didn't even realise they were included. Just round the corner from where I live is an elderly couple with an immaculate motorhome, I think its a W reg. That will have to go. My mate has a very old series one Landrover in show condition, same thing.
Actually you can still drive in and out of the zone if you know where the cameras are situated but obviously its a bit risky. the charge is £200 a day so I can't imagine what the fine will be.
And actually, its not Boris. This plan was started under Livingstone